i always enjoy watching all your videos they are educational and i learn a new thing each time and you are a great teacher and explain things you are doing in great detail and i hope that you are doing very well and keep up the great work and videos all the best have a great weekend
Ciao, seguo molto volentieri i tuoi video da quando ho scoperto il tuo canale un paio di anni fa. Sei molto bravo nella spiegazione di cosa succede mentre fai la riparazione e sicuramente nelle riparazioni. Grazie per l'insegnamento che mi dai. Ciao
Ahh great video! A lot of memories messing around with these early Sony units as you say, as a kid. Get that other R2R sitting on your floor, and get it on the bench! :)
Many years ago, I exchanged a Goldring G900 pickup for a work buddie's old Phillips reel to reel machine (lots of valves inside). We used the machine at work playing music on late shift and night shift. I bravely replaced the rec/play head and that puppy sang to the amazement of the guy who once owned it. I bought a bundle of blank tapes and we copied a ton of music onto to it via a tiny Panasonic portable cassette recorder. That was the great thing about these old machines - how much you could cram onto a single reel of tape. Ah ! Nostalgia !!!
I bought two of these a couple of years back. I had to replace the motor caps on both as the motors were not capable of producing enough torque. They are both working excellently now.
It's amazing how long-lived a lot of ancient equipment can get. I have a Cambridge Audio P110 amplifier from 1974 , a Technics SL-1700 turntable from 1978, and my Thorens TD 150 Mark 2 turntable of 1974 vintage. Really well-built gear unlike today's plastic crap !
I just ordered this model from eBay today. I can’t wait to get this thing working. My other one is the Akai 1721W where it has a problem. The left channel is weak and the right channel is working and the problem, the record/play head is shot. I might be doing a video on the TC-105 soon.
The tc 105 was used to play 4 track recordings of textbooks to be used by blind persons in school. The tc 105 records only on 2 tracks but has 4 track playback in mono. The later model tc 105a has both record and playback capability in 4 track mono. In addition, I think only the tc105a has a small PA system built in. Students also may have used these models to record classes and on the jobs sometimes. They were nice machines. They could also be used by court reporters to record hearings as the 4 track mono recorders would cut the number of tapes needed by One half.
No you didnt put me to sleep :-D Tape recorders can be very complex when they start to add extra features like chrome/metal tapes and dolby. The record bias and pre emph / de emph circuits get a bit messy. Switched in/out capacitors adjust the preamps depending on tapes. Often a filter is used to stop the pilot tone from a tuner getting into the recording circuits. The filter can screw up the recordings if its a crap design. Philips had a bad habit of using one valve for multiple uses in tape recorders, dam annoying at times when fault finding. R/P Mode switches i hate, All record and play circuits leaking and oscillating :-(
20 minutes in, I wasn't thinking caps lol. I see they're your favourite brand though, albeit the older ones that I'm used to seeing all be good still. Current guess is a tin whisker shorting something (Just to be different, even though my head says cracked solder)
You're not boring Dave, I think watching somebody with your skill troubleshoot and repair old electronics does make for a very relaxing video though so can understand some of our more senior viewers nodding off into happy dreams about capacitors and transistors and 60/40 solder with the "L" correctly pronounced. Also, did you ever go back and find out if the erase head was wired correctly on this machine? (just kidding)
Aww poor Carlson, he's not that bad either lol (will admit though his videos are way more "in depth" and only tend to watch him if it's something of particular interest, your balance makes for good daily viewing when time arises)
As you zoom in to the unsoldered resistor lead you can see ANOTHER unsoldered lead directly above it in the middle of the board...prob making a connection still though
We had that exact reel-to-reel machine in our family I believe that came out in 1970 I found the tape that my parents had recorded plenty of music and recordings of us I still have the machine electronically it still works but the two idler wheels are solid and just slip any ideas on how to fix those idler Wheels
We can change the motor capacitor value i have a TC 350 and I changed the connection of the cap from 1.0uf to 1.5 uf ,but it is a 2 speed machine , and we in india have 50hz cycle and the machine I bought was of USA . It is working and playing my old tapes that my late father had recorded on old JVC TR-171
Re: putting your audience to sleep. I think it's horses for courses, I watch your videos to try and learn about fault conditions and repair techniques but sometimes I listen at night and fall asleep. This world has gone 'nuts' and if anyone can find comfort somewhere, I say 'go for it' What's the harm in a few more views for your channel ? Anyway, I have 3 Sony reel to reels (including a TC-630 like the one you have) but I don't have a brain that works like yours, so I generally watch your repair videos to try and copy your 'mind set' for fault finding and I have a 'question' for you. What is your procedure/thinking process for parts that you have removed whilst they are off the unit until it's time to be put back on ? I was mainly thinking about the many screws and nuts and bolts that come off these complicated assemblies but it should include everything really. I am very interested to know your thoughts and methodologies. Anyway thanks for the videos, you are much more than a occasional antidote to insomnia !
Im currently working on one of these, but by the look of it it has a blown fuse, and for the life of me I cant figure out how to open the fuse holder, any ideas?
I had one of these units back in the eighties and boy what great sound but I burnt my motor out by putting it on carpet and the motor got real hot and quit! Now maybe I didn't burn the motor out but it could have been A cap that gave way!
What ! On the carpet ? Be grateful you didn't start a fire. I used to wince when I saw people with their VCRs on the carpet underneath their old televisions many years ago. Please don't put gear on the floor !!
As they age the capacity tends to increase as the electrolytic is stagnant. They will reform once they are charged for awhile and settle down to be within their tolerance. Has to do with the chemistry in the old electrolyte so not really a concern. If the capacitor was dry the capacity would be low and the esr high.
@@SDsailor7 it's an AC induction motor. It spins at whatever the line frequency is. Some units do have a switch but all that does is change the capacitor value from 1.5 to 3uf as 50hz requires a larger cap. You need to change the capstan size or pulley size to compensate for the motor speed difference.
No. This is a 1/4 track mono. If you play a stereo tape you chose left or right. Hey its better than the other mono machine I have. If you play a stereo tape you hear both sides at the same time as it i s a half track mono head.
Better leave it as it is with it running at 50hz... Faster speed gives you better sound quality. Yes he cant loan out tapes to others but he could record and lissen to those he recorded with this machine... Btw... I got a Sony TC630 from 1972 myself and i love this old reelers...!
45:33 "There's no money in this repair" Presumably you're receiving ad revenue from this video Dave? If not then why did I sit through two ads in order to watch this?
That's all i make. The time spent is not recovered by what i get for repairs. For example the evs7000 with the dead click display i got 50 bucks for it and so far perhaps 25 in ad revenue. The royalties i make from the videos are the only reason I do it and 50% of that is eaten up by taxes.
i always enjoy watching all your videos they are educational and i learn a new thing each time and you are a great teacher and explain things you are doing in great detail and i hope that you are doing very well and keep up the great work and videos all the best have a great weekend
We had several machines exact same model in high school back in the 70's Nice repair!!!
Ciao, seguo molto volentieri i tuoi video da quando ho scoperto il tuo canale un paio di anni fa. Sei molto bravo nella spiegazione di cosa succede mentre fai la riparazione e sicuramente nelle riparazioni. Grazie per l'insegnamento che mi dai. Ciao
Good job. Best wishes from Transylvania.
Ahh great video! A lot of memories messing around with these early Sony units as you say, as a kid.
Get that other R2R sitting on your floor, and get it on the bench! :)
Many years ago, I exchanged a Goldring G900 pickup for a work buddie's old Phillips reel to reel machine (lots of valves inside). We used the machine at work playing music on late shift and night shift. I bravely replaced the rec/play head and that puppy sang to the amazement of the guy who once owned it. I bought a bundle of blank tapes and we copied a ton of music onto to it via a tiny Panasonic portable cassette recorder. That was the great thing about these old machines - how much you could cram onto a single reel of tape. Ah ! Nostalgia !!!
I bought two of these a couple of years back. I had to replace the motor caps on both as the motors were not capable of producing enough torque. They are both working excellently now.
I like these reel to reel videos very interesting and entertaining.
Thank you
I have one sitting on the floor that was given to me that i am scared to put up on the bench. In pretty sad shape.
Beware of getting as sad as me - scouring through vintage audio equipment on eBay !!
@@hifismiffy I don't buy vintage audio. People give me vintage audio. I have more than I know what to do with.
thats incredible how it has worked from new
It's amazing how long-lived a lot of ancient equipment can get. I have a Cambridge Audio P110 amplifier from 1974 , a Technics SL-1700 turntable from 1978, and my Thorens TD 150 Mark 2 turntable of 1974 vintage. Really well-built gear unlike today's plastic crap !
I just ordered this model from eBay today. I can’t wait to get this thing working. My other one is the Akai 1721W where it has a problem. The left channel is weak and the right channel is working and the problem, the record/play head is shot. I might be doing a video on the TC-105 soon.
I also have the same problem
Great video!!!
If I recall correctly, there was a shaft (and a screw to lock it down) you had to put over the capstan for 50 or 60 Hz mains frequency.
GREAT VIDEO !!!
Mr C boring!!!! He will be happy! That would have been a good machine when it first came out. Nice to get an explanation at the end of the circuit :-)
The tc 105 was used to play 4 track recordings of textbooks to be used by blind persons in school. The tc 105 records only on 2 tracks but has 4 track playback in mono. The later model tc 105a has both record and playback capability in 4 track mono. In addition, I think only the tc105a has a small PA system built in. Students also may have used these models to record classes and on the jobs sometimes. They were nice machines. They could also be used by court reporters to record hearings as the 4 track mono recorders would cut the number of tapes needed by One half.
Electronic is crazy 😋
Time to wake up already?! Just kidding! Always enjoy a good reel to reel vid!
1st thing clean R/P switch!
Woowhoo! Another rtr saved!
By the most talented repair guy that I know of - on UA-cam at the very least !!
No you didnt put me to sleep :-D
Tape recorders can be very complex when they start to add extra features like chrome/metal tapes and dolby.
The record bias and pre emph / de emph circuits get a bit messy.
Switched in/out capacitors adjust the preamps depending on tapes.
Often a filter is used to stop the pilot tone from a tuner getting into the recording circuits.
The filter can screw up the recordings if its a crap design.
Philips had a bad habit of using one valve for multiple uses in tape recorders, dam annoying at times when fault finding.
R/P Mode switches i hate, All record and play circuits leaking and oscillating :-(
20 minutes in, I wasn't thinking caps lol. I see they're your favourite brand though, albeit the older ones that I'm used to seeing all be good still. Current guess is a tin whisker shorting something (Just to be different, even though my head says cracked solder)
Well, my head was right, whiskered transistor leads would've been fun too though.
You're not boring Dave, I think watching somebody with your skill troubleshoot and repair old electronics does make for a very relaxing video though so can understand some of our more senior viewers nodding off into happy dreams about capacitors and transistors and 60/40 solder with the "L" correctly pronounced. Also, did you ever go back and find out if the erase head was wired correctly on this machine? (just kidding)
Aww poor Carlson, he's not that bad either lol (will admit though his videos are way more "in depth" and only tend to watch him if it's something of particular interest, your balance makes for good daily viewing when time arises)
As you zoom in to the unsoldered resistor lead you can see ANOTHER unsoldered lead directly above it in the middle of the board...prob making a connection still though
used to mod those to tape delay units for musicians
@56:40 - sounds like the bird-like feedback sound on a few Jimi Hendrix records
Or rtty (radio teletype)
We had that exact reel-to-reel machine in our family I believe that came out in 1970 I found the tape that my parents had recorded plenty of music and recordings of us I still have the machine electronically it still works but the two idler wheels are solid and just slip any ideas on how to fix those idler Wheels
Use Rubber Renue chemical it softens the rubber of idler wheels , u can watch Dave's post on usage of rubber renue on you tube
agree, right aproach with paypal
We can change the motor capacitor value i have a TC 350 and I changed the connection of the cap from 1.0uf to 1.5 uf ,but it is a 2 speed machine , and we in india have 50hz cycle and the machine I bought was of USA . It is working and playing my old tapes that my late father had recorded on old JVC TR-171
is this going to be in the test next week?
n_n cuz i didn't took notes =P
Re: putting your audience to sleep.
I think it's horses for courses, I watch your videos to try and learn about fault conditions and repair techniques but sometimes I listen at night and fall asleep.
This world has gone 'nuts' and if anyone can find comfort somewhere, I say 'go for it' What's the harm in a few more views for your channel ?
Anyway, I have 3 Sony reel to reels (including a TC-630 like the one you have) but I don't have a brain that works like yours, so I generally watch your repair videos to try and copy your 'mind set' for fault finding and I have a 'question' for you.
What is your procedure/thinking process for parts that you have removed whilst they are off the unit until it's time to be put back on ?
I was mainly thinking about the many screws and nuts and bolts that come off these complicated assemblies but it should include everything really.
I am very interested to know your thoughts and methodologies.
Anyway thanks for the videos, you are much more than a occasional antidote to insomnia !
Im currently working on one of these, but by the look of it it has a blown fuse, and for the life of me I cant figure out how to open the fuse holder, any ideas?
Can you repair a 70’s Maestro EP3 Echoplex?
I had one of these units back in the eighties and boy what great sound but I burnt my motor out by putting it on carpet and the motor got real hot and quit! Now maybe I didn't burn the motor out but it could have been A cap that gave way!
Those are induction motors. Very reliable. The run cap could have gone open. Then it won't spin.
@@12voltvids You know your very right! But I got rid of it after that! Darn if I only knew about them electronics back then!
@@Jammerk40
Lol i have been trying to get rid of stuff. I have away a nice vintage reel to reel and the guy brought it back.
@@12voltvids So you have one for sale?
What ! On the carpet ? Be grateful you didn't start a fire. I used to wince when I saw people with their VCRs on the carpet underneath their old televisions many years ago. Please don't put gear on the floor !!
I came across a vintage cassette recorder player/ loyds 1983
An extra long video today!
Short version coming for those with short attention span.
Ha. I have two of those.
Please give motor details for rewinding
Very mechanically similar to my sony TC-630
Yes most Sony models of this vintage were the same or very close.
@@12voltvids very cool!
So the cap said it was a 33mfd and when you tested it it read as a 90mfd??
Why was that? How weird.
As they age the capacity tends to increase as the electrolytic is stagnant. They will reform once they are charged for awhile and settle down to be within their tolerance. Has to do with the chemistry in the old electrolyte so not really a concern. If the capacitor was dry the capacity would be low and the esr high.
@@12voltvids Very interesting. I have learned something new, thank you for the explanation.
Hey There is a switch on the bottom for 50 or 60 Hertz
No that is for the voltage not the frequency. 100, 110, 117, 125, 200, 220, 230.
@@12voltvids Oh OK thanks
Maybe the switch was not connected.
@@12voltvids someone comented that there is a 50/60hz on the bottom of the unit is that correct? And was that switch connected to the circuit?
@@SDsailor7 it's an AC induction motor. It spins at whatever the line frequency is. Some units do have a switch but all that does is change the capacitor value from 1.5 to 3uf as 50hz requires a larger cap. You need to change the capstan size or pulley size to compensate for the motor speed difference.
No function to play a stereo tape in Mono?
No. This is a 1/4 track mono. If you play a stereo tape you chose left or right. Hey its better than the other mono machine I have. If you play a stereo tape you hear both sides at the same time as it i s a half track mono head.
Mine doesn't fully retract the capstan. Is it missing a roller or a bent arm?
ua-cam.com/video/rkftjC2Lc1E/v-deo.htmlsi=eATuCLS9DXAWUgM2
Better leave it as it is with it running at 50hz... Faster speed gives you better sound quality. Yes he cant loan out tapes to others but he could record and lissen to those he recorded with this machine... Btw... I got a Sony TC630 from 1972 myself and i love this old reelers...!
45:33 "There's no money in this repair" Presumably you're receiving ad revenue from this video Dave? If not then why did I sit through two ads in order to watch this?
That's all i make. The time spent is not recovered by what i get for repairs. For example the evs7000 with the dead click display i got 50 bucks for it and so far perhaps 25 in ad revenue. The royalties i make from the videos are the only reason I do it and 50% of that is eaten up by taxes.