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Ray Gianelli
United States
Приєднався 2 гру 2013
I was one of those kids that took everything apart to see how it works. 60 years later I still do. Only difference now is I put them back together!
Join me as I repair vintage audio equipment, test equipment and other electrical/electronic items. I'll share my process, my troubleshooting philosophy, how to read schematic diagrams and test electronic components.
My focus in creating this channel is to share the things I've learned about electronics. This is the only way that technicians can reproduce. Please subscribe so we can make this journey together!
Join me as I repair vintage audio equipment, test equipment and other electrical/electronic items. I'll share my process, my troubleshooting philosophy, how to read schematic diagrams and test electronic components.
My focus in creating this channel is to share the things I've learned about electronics. This is the only way that technicians can reproduce. Please subscribe so we can make this journey together!
Відео
Marantz 2230 Tuner Repair and Restring
Переглядів 1,5 тис.4 місяці тому
This video shows the steps taken to diagnose poor tuner sensitivity, and how to (and how not to) restring a tuner. Brian Beezley's web site: www.ham-radio.com/k6sti/match.htm #electronic #electronicrepair #vintageaudio #audio
Pioneer SX680 Repair
Переглядів 1,3 тис.4 місяці тому
This receiver had barely audible, highly distorted sound in both channels. This video outlines the steps taken to diagnose the problem and repair it. #electronic #electronicrepair #vintageaudio #vintagestereo #audio
JVC JR S200 Random Blast of Noise
Переглядів 9295 місяців тому
This receiver would play music, but occasionally would emit random blasts of noise, sometimes extreme enough to throw it into protect mode. This video outlines the steps taken to clear that issue, as well as other noise issues. #electronic #electronicrepair #vintageaudio
McIntosh C31V Volume Control Issue
Переглядів 1,1 тис.5 місяців тому
This video outlines the troubleshooting steps taken to repair an unresponsive volume control. Unlike vintage analog volume controls, this one is electronic. #electronic #electronicrepair #vintagestereo #vintageaudio
Distortion Analysis: I've been doing it all wrong
Переглядів 1,5 тис.6 місяців тому
I recently learned that my distortion analyzer had been connected in a manner that leads to higher than normal readings. This video demonstrates this, and the steps taken to correct it.
Neumann V402 Mic Pre
Переглядів 4536 місяців тому
While this video shows the repair of an expensive esoteric piece of studio equipment, the troubleshooting steps are common to any piece of electronic gear exhibiting similar symptoms. #electronic #electronics #electronicrepair
Just a quick update
Переглядів 1,2 тис.7 місяців тому
Just wanted to sign in and tell everyone what's been up.
Luxman LV 105U Phase 2 Driver Board
Переглядів 8778 місяців тому
Time to tackle the driver board in this episode. As bad as I thought it was, it was even worse! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Luxman LV 105U Phase 1: Power Supplies
Переглядів 8839 місяців тому
Power supplies are the heart of any electronic system. In this video I go through the various power supplies in the amplifier, replace missing parts and verify operation. It's gonna be a while before this thing puts out any music! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Onkyo TX SV727 Repair of Remote and Broken Pot
Переглядів 9399 місяців тому
This video shows the steps taken to repair any remote control with dead buttons, and how to replace no longer available potentiometers. #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Luxman LV 105U Repair Project
Переглядів 1,2 тис.9 місяців тому
Preliminary evaluation and repair plan. This is an interesting design containing BJT transistors, vacuum tubes and MOSFET's. It had been worked on, and parts are missing. Let the games begin! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio
Realsistic STA 2280
Переглядів 1,1 тис.9 місяців тому
This video outlines steps taken to repair a no FM reception condition, as well as an issue with the power meters. #amplifierrepair #electronic #audio #electronicrepair #vintageaudio
Realistic STA 77
Переглядів 4,7 тис.10 місяців тому
This video outlines a repair to a defective channel, which affected the other channel, and also clearing issue with no FM stereo operation #amplifierrepair #electronic #audio #electronicrepair #vintageaudio
Yamaha MX1000 Repair #amplifierrepair #vintageaudio #vintagestereo #audio
Переглядів 3,7 тис.10 місяців тому
Yamaha MX1000 Repair #amplifierrepair #vintageaudio #vintagestereo #audio
Yamaha MX1000 #Shorts #vintagestereorepair #yamahaamplifierrepair
Переглядів 54811 місяців тому
Yamaha MX1000 #Shorts #vintagestereorepair #yamahaamplifierrepair
Sansui AU 719 Stereo Integrated Amplifier Initial Evaluation and Restoration
Переглядів 7 тис.Рік тому
Sansui AU 719 Stereo Integrated Amplifier Initial Evaluation and Restoration
Sansui AU 719 Bad Power Transformer #electronic #audio
Переглядів 4 тис.Рік тому
Sansui AU 719 Bad Power Transformer #electronic #audio
Adcom GFA 555 Internal Protection Update and Correction
Переглядів 1,4 тис.Рік тому
Adcom GFA 555 Internal Protection Update and Correction
Installing an Internal Protection Relay in an Adcom GFA 555 IMPORTANT: READ DESCRIPTION!
Переглядів 3,1 тис.Рік тому
Installing an Internal Protection Relay in an Adcom GFA 555 IMPORTANT: READ DESCRIPTION!
Sony TA N77ES Power Amp: Making it Work with Missing Speaker Selector Switch
Переглядів 2,4 тис.Рік тому
Sony TA N77ES Power Amp: Making it Work with Missing Speaker Selector Switch
Sansui 9090 Replacing Speaker Terminals with Banana Jacks
Переглядів 1,2 тис.Рік тому
Sansui 9090 Replacing Speaker Terminals with Banana Jacks
Sansui 9090DB Pops When Bass Control Engaged Solved
Переглядів 847Рік тому
Sansui 9090DB Pops When Bass Control Engaged Solved
Sansui 9090DB Restore Part 7 Tuner Alignment and Final Testing
Переглядів 1,7 тис.Рік тому
Sansui 9090DB Restore Part 7 Tuner Alignment and Final Testing
I know you mentioned in video about the HP 8904A serial numbers, do you happen to know which ones with Option 1 I should be looking for?
Yes. It must be 2948A or above.
Another great video. I did laugh out loud at your joke at the end :)
😁
Mine left channel DC offset is about at 190mv, any suggestion on cause of this? I am guessing the 1st differential Q7103(7103-1 7103-2)? And this is one of those dual 5pins transistors, no longer available. I know this has been a while, any help would be appreciated.
So I have (2) questions... I have a 1972 12V Philco (Ford) AM radio... dead. My bet is the caps since the unit is soo old and soo simple... What say you? Second, I have a Sansui 500 tube FM Stereo receiver... that beast is loaded with Caps of all vaieties and sizes... some of which are long obsoleted.... I've been sitting on that project for 10 years... Never have powered it up because the insides show evidence of a few exploding caps (oil everywhere).... Have you done and Sansui's of tube vintage? I have experience in working on components and reading schematics, etc etc... but the Sansui will be a high value job.
I've worked on both car radios and tube amps. Capacitors in the Philco may have been exposed to high heat in a parked car, and therefore may be one of the problems, or maybe the only problem. Voltage tests should help pinpoint where the issue(s) lie. The Sansui is a different story. Due to the age of the components and the high voltages encountered in tube gear, they are all suspect and most likely leaky (electrically speaking) or just plain bad. This is one of those cases where a wholesale recap is recommended. Capacitors in 70's solid state gear were both better constructed and under far less stress. I've pulled capacitors out of early 70's Marantz gear that all tested good. I've pulled caps out of late 70's NAD gear that all tested bad. Quality electrolytic capacitors matter for longevity.
@@raygianelli3612 Thanks for the reply. Great info! It confirms my suspicions and I think i've been on the right track on these 2 very different projects. The Philco should be a quick simple project. The Sansui? Well, it will be interesting!
Quick question Ray... what is the reason you aren't using the signal generator built into your Levear? Is it just a matter of ease of use with the other one you're using?
I was having issues with the internal generator, which was later remedied with some parts purchased from excellent tech and all around nice guy Phil (PAC1085).
@@raygianelli3612 as an aside... the back of that carver even has a diagram to the right of the speaker terminals showing that red goes to + for both left and right... even though the diagram in line with the terminals shows the bottom-left red terminal going to ground... so confusing. I wouldn't have figured this out!
Enjoyed the video. And hey, not graduating from high school or college is nothing! Sounds like you did pretty well finding a passion and, through the years, have gotten very good at what you do! Enjoy it! I found this video because I was basically gifted a nice Yamaha setup from the 70s. CR-2040 receiver, and both a cassette and record player along with a shiiiitload of records. I don't have any real experience working on audio equipment, and when I asked a friend about a low hum at higher volumes, he said, "You need to recap it!" Thanks for talking me down. 😂😂😂
Thank you. Thankfully my lack of formal education has been offset by a major curiosity about how things work. That coupled with the fact that I've always been a voracious reader and have an innate understanding of technology has allowed me to thrive. If it wasn't for that I'd be shoveling manure. 😆
@raygianelli3612 It's interesting how us humans' brains work. I truly believe that we all have gifts mentally, but with that, we also have deficiencies. It always bewildered me how certain people I've known throughout this life have such insane retention of what they read, yet they struggle mightily in other areas. If only we could see the world through someone else's brain for a day... I mean, mushrooms help, but it's not QUITE the same. 😁
@@JarsofMayo True. I've seen people with ungodly skills in one area, yet completely lost in mundane everyday tasks. As I approach 70 my memory isn't as good as it used to be. I don't recall names of people I recently met, yet effortlessly remember strings of numbers or alphanumerics. Dunno if shrooms help or not, but we used to pick them in cow pastures in Miami when I was a teenager. 😆
💯💯💯 hate it when I watch a video where they just recap, without any idea what the function of the cap is, and when the equipment still does not work, don’t have any idea how to find the actual fault.
I had no idea there were actually videos where people recapped in an effort to restore operation and, failing that, were lost. That's mind blowing!
That was an easy and economical repair. Bravo for your honesty.
Thanks. All the repairs I do are for myself or friends.
Thanks for posting this, I bought 2 used 1091 mono versions of this amplifier. I really the efficiency and light weight of them. They operate so barely warm. Nice to see an easy fix for this issue 👍
I was grateful that the relays were the only issue since there are no schematics for the power modules. They are a revolutionary design, and despite what audio purists may say, they're excellent performers.
@@raygianelli3612 Bang and Olufson designed the " ICE POWER MODULES "
Bonjour from france! Great video! I do have the same transformer problem on the same amplifier! Do you have any tips to find them? Do you know an equivalent model?
For whatever reason these amplifiers have transformers that fail. Unfortunately, the only source is from amps being parted out. So the only options are eBay, or find a company that rewinds transformers. And bonjour from the US!
Just a question , but are these the correct double transistors? www.ebay.co.uk/itm/194308444677?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D269853%2C269576%2C269178%2C270075%26meid%3D13383d83d0934dcf825606dfed76711a%26pid%3D101224%26rk%3D3%26rkt%3D5%26sd%3D121668651619%26itm%3D194308444677%26pmt%3D0%26noa%3D1%26pg%3D2332490%26algv%3DDefaultOrganicWebV9BertRefreshRankerWithCassiniEmbRecall%26brand%3DUnbranded&_trksid=p2332490.c101224.m-1
sir. is it possible to measure the watts of the amplifier at 8 ohms?
Yes. You need to load the amplifier with an 8Ω load, a large wattage resistor is recommended.
@@raygianelli3612 thank you so much. i watch on other youtube channel and heard. there's such thing as a Dyno Amp to measure the watts of the amplifier too.
@@CarloTheAtheist2.1 Holy crap, they want almost US $6,000 for that thing! Guess if I ever need to measure amps of 19,000 watts/channel, I'd have to consider it. But I've never seen an amp even close to that, so my money's safe for now. 😁
@@raygianelli3612 exactly! oscilloscope also can do anything.
I know this is an old video, but i swear that trace is crooked. You can really tell at 9:00 the right most peak is visibly higher than the left most peak. Do these old analog scopes have a setting for that?
there is a trace rotation adjustment on the front of most cathode ray oscilloscopes. It's usually recessed and adjusted with a small screwdriver.
@@raygianelli3612 I figured it to be something along those lines. I see these older scopes being used by the best of the best. They really must be worth saving.
@@KaylansDrone Like any tool, they have their pros and cons. The new digital storage scopes have an amazing array of measurement capabilities, and they shine at single shot/low rep rate signals. But the old scopes are better at displaying Lissajous patterns and other X/Y signals. And I prefer them for observing waveform fidelity. Oh, and these days they're cheap!
Hi Ray, I couldn't Find your email address here on your channel. I need your advice on something, I'm a novice. I'd like to learn how to troubleshoot vintage receivers. Can you suggest a book or online class? I'm 72 and so I don't have years to study in a classroom setting, if you know what I mean... I've got a Marantz 2230 with 32.2 volts on the right channel output speaker terminal and 32.8 volts on the left terminal. The readings should be in millivolts not volts from what little I know. I've watched UA-cam videos on high offset voltage but I'm feeling a bit insecure about the process and where to start with this. Any suggestions would be appreciated. Thanks, Phil
Hi Phil! While readings like that on a direct coupled amp would set off alarm bells, your 2230 is capacitor coupled, which in plain English means there is a large value electrolytic capacitor inserted between the output stage and speaker terminals. This si why there is no protection relay in this receiver; the coupling caps block any DC from the outputs. The voltage you're seeing is normal, when the channel is unloaded, i.e. no speaker connected. If you have an 8Ω resistor (or any small value), connect it across the speaker terminals and measure it then. The Navy NEETS manuals are a great resource. It's a bit of a slog, but there's really no shortcuts to understanding electronics: compatt.com/Tutorials/NEETS/NEETS.html
Hi Ray. During your rebuild, did you notice a spring coiled around the volume knob post? I bought one of these second hand and I’m taking it apart to clean it. I noticed that spring looks a bit mangled and I’m not sure if it was positioned correctly. Any info would be greatly appreciated!! Loved the vid!
@Ray Gianelli Did you do an updated Video on this?
Just the one posted
@@raygianelli3612 Thanks, just found it.
NAD- Not Adequately Designed. Nothing personal. I came up with that decades ago when I used to repair. Now due to financial reasons I have to do it again. I hated that NAD mixed Japanese and American transistors so you have to be careful subbing them out. We came up with acronyms for everything in the shop. One guy came up with "Oink N blow" (Onkyo.) I came up with Damn Equipment Never Operated Normally.(Denon). I dont know who made it but Sony- Some Operate Not Yours. Good luck with your move. I may be forced to. I won't be able to afford an apartment in my home state. It's expensive now. If you sell a stereo am fm signal generator with a pilot let me know. I just picked up a boonton 103a. I have to get a shop going in my garage to try to make ends meet unless you think it's a bad idea. I just do audio. Great videos. I just found your channel a few weeks ago. I really like your presentation. If you want a video idea, if you havent made one already, what are the do's and donts of making a shop at home.
I hear you on the audio stuff; each manufacturer has their own Achilles heel. I also hear you on affordability. Whoever said life is cheap never tried to live in the 21st century.
Thank You for the video! I purchased a Crown Power Line 3 amp and had some issues with the IOC. One of the IC packages needed to be replaced in the comparator circuit. You are not kidding when you said the Crown is a different beast to wrap your head around. Thank you again for the detailed video.
Wow.. Been there before with that dial string.. It's always a "oh s%^t" moment... Great use of fishing line.. that stuff will last a long while.. I was real curious however about the issue you had with the 300 ohm vs 75 ohm.. The only device there is the balun which is really just wound wire around a piece of ferrite. Ive never seen those ever go bad but another thing i have found is that attenuator switch develops oxidized contacts and often needs to be de-oxit cleaned which i have found was a big cause of weak gain. If you still have that unit.. give that a simple try....
It's already gone, Frank. Cleaned the switch a few times. May have been soldering between the balun and the terminals.
Good luck mate from the uk !
Thanks Robert! I think a backhoe is needed more than luck; I can't believe how much stuff I've accumulated in the last 25 years. It kind of creeps up on you. 😁
Ray wherever you go with your kind persona you will be welcomed. Please keep us in the loop. Many thanks. Be safe and be well.
Thank you for this wonderful post!
Sorry to hear you may be relocating! Got a Sat or Sun morning to help with a little diagnosis to help me fix my screwup? Hope all well with you/yours. Best..K
Sorry Keith, but the bench is shut down for now. I'll let you know when that changes.
Hi ya Ray. Glad to see you doing well. Thanks for the update. Sorry to hear you may leave the area soon, but I understand. I too feel the need to leave SoFla soon. Are you still taking in repairs? If so, how much longer? Scott Cannon AT&T retired (Margate CO)
Scott, I'm on hiatus from the bench, as I dig through 24 years of accumulated stuff. It accumulated slowly, and as I started going through it all I was shocked at how much there is! I'm still grinding away in the West Palm Annex CO. It's funny, though. Now that I know I can leave whenever I want the whole dynamic has changed. I don't stress about anything anymore.
@@raygianelli3612, I mistakenly thought you were retired already. I can understand how knowing you can leave anytime would seem a bit ‘freeing’. I jumped out as soon as I could…more than ready. Good luck to you moving forward 😉
nice to know you're ok .hope you get things done and have you back as soonest possible my friend you know we miss you here ray,we learned a lot with your videos ha e a great day
Sorry I waited so long to post, Wilfredo. Time passes quick at my age!
Ray, I wish I could recommend moving to upstate New York we need good electronics techs here in a big way. However, moving to New York is not exactly recommended by most of us living here. There's empty U-Hauls coming north and full ones going south.
I was born on long Island, and get up that way to visit relatives both their and upstate. I was taking a class at work, and the instructor came down here from North Carolina. He said when he first moved there, he heard people bitching about the "half backs". When he asked what that meant, they said "you know, those folks that move from New York down to Florida, then half way back." 😁
@@raygianelli3612 "Half Backs" That's awesome! I have a buddy who would like me to work in his shop in Mid-Virginia. I wonder what I would be called there? hahaha
I started working on my own equipment a year ago and so far I haven’t destroyed anything. How ever I believe it is very important to know how to properly clean a board before putting in a new component like de soldering I go in with flux and a soldering wick and blow it to get any microscopic solder bits off the board. I still have a ton of stuff I’d like to learn to do and will hopefully find a good class somewhere to get better.
Jose, classes in electronics are really hard to find, if not already extinct. But there are many excellent channels, with techs showing how to perform a variety of tasks. But nothing beats hands on experience!
I hope all works out for you! I know what you mean about moving out. It's getting way to expensive here and things are not what they used to be...for sure! Wishing you the best! Take care and take it one day at a time!!! Be well!
No need to apologize, Ray. We miss seeing your videos and learning from them, but sometimes real life stuff needs to be the priority. All the best and we'll keep the light on for you.
Wherever you go, God is with you mate. My sincere best wishes and good luck. Ed, from UK.🇬🇧
Hi Ray, Glad you are keeping well.
Thanks for all you've done for the community! Best of luck to you in your future Ray!
❤
Glad to know you are doing somewhat well! I am currently one of those kids taking everything apart and messing with it, my last project (adding a fan to a Technics SU-V8) didn't end well though. I ended up having two smoking resistors and some part pulling way too much current, but i can not figure out what it is. After almost a month of tinkering and testing, I think i need some help. Would it be possible to contact you and receive a bit of help? Of course only whenever you are free and willing, and id love to maybe give something back to you somehow Cheers
Hello Ray, no need to apologise, life is complicated. Hope your move goes well and brings what you need into your life, regards Kevin
Thanks Kevin. It's been eye opening, realizing just how much stuff accumulated over the last 24 years in this house. Along with the stuff I moved in with.
That’s a lovely, simple and sincere video explaining clearly how to properly make the right thing from a sincere and professional electronic engineer. Like and subscribed straightaway. 3 Years old uploaded video!
Thank you. You caught me at a bad time, though. Having to take a hiatus to prepare my house for sale.
I have missed the informative, educational, and useful content.
Wow, thank you! It's what I strive for, but often feel like I could have done better.
Good to see you Ray !.......Many of us were kind of worrying ......hope to see you back soon . We all like you ....
Thanks Frank. Unfortunately I have to continue clearing out stuff. On the plus side, it's way easier to find things now!
Best wishes Ray, we miss you !
Thanks, I miss interacting with you guys too! I've come in contact with amazing people since starting this channel.
Good to see you Ray. Take care
Thank you. I've gotten rid of a bunch of stuff, and found a fairly nice garage under all of it!
Nice to see you back Ray ! and hope you can keep the electronics going wherever you may move to. Move somewhere without such a high chance of storms.. come on up to the northeast !
I don't mind the storms themselves. The insurance is just brutal, and with many insurers pulling out, the prices for coverage are simply obscene. We'll see where I wind up!
I have a 1991 Hitachi stereo system and I have a similar type problem with the radio section. When I turn on the radio, there will be static and crackling on all wavebands, but then I will turn the machine off and on again, sometime later and all the stations will work . . . and on all wavebands, but it will then slowly fade out after about two minutes and it's back to static and crackling again. Any idea what might cause this?
Good to hear from you Ray! Moving back to the people’s republic of New York?
I wouldn't rule it out. I liked living up there, and when I visit relatives I think about it. But I may strike out for somewhere different. I plan to visit some friends around the country and see where they live and how they like it.
Ok Ray be safe man !
Thanks1 Sometimes I wonder how I made it to this age with all my limbs and appendages. 😆
Best wishes Ray!!
Thank you. What I really need is a backhoe. It's frightening how much stuff accumulates over time!
Happy to hear you're okay. The update is appreciated and I'll be here when you get back to the bench. Peace.
Thank you. I still have a few things that belong to others, and a few sizable items that need repair before sale, so I hope to get to those things soon!
Thanks for the update, I subscribed just before you "disappeared". I enjoy your videos a lot! I'd say no worries about needing some time away from your channel; it's not like you're charging people to watch them. lol Life happens. I'm glad you're doing well. :)
Thank you for your understanding. I tend to focus deeply on whatever I'm into, at the detriment of other things. When I looked up from the bench I was appalled at how much stuff had accumulated!
why leave florida ??? florida is supposed to be great !!!
i left in 2002 after 10 years, it wasn't that great. pay scale has gotten better but nothing else has.
Actually Florida is nice. But like many nice places, the cost of living is skyrocketing. And the real driver of wanting to leave is the cost of windstorm coverage.
Good to see you post up Ray - good luck and if you do move, the silver-lining is it's new workbench time!
That's a really good point. I've certainly refined what I think a good layout looks like since I started.
Glad all is well; any idea where you want to move? I lived in the panhandle for 11 years (80's-90's)...sure do miss it!
Somewhere where windstorm coverage won't bankrupt you.
Thanks for the update Ray, really missing your videos. Good luck with the tasks at hand!
Thanks David. And yes, it's tasks plural. Everything I do points out 2 others that need doing.