Yamaha MX1000 Repair
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- Опубліковано 9 вер 2023
- Received this amplifier in pieces... and not all the pieces were included. Parts had been removed, and PCB boards were damaged. This video outlines the procedure to troubleshoot and repair this amplifier. Mistakes were made, discovered and corrected.
Best part the sigh at 12:32 when you realize that you still have a problem 😂
nice work! I like your normal and humble approach and that you are showing really how much time and usually mistakes you need to get through to get things working.
Thanks for the video Ray 👏
OMG, that's hilarious! Hard to believe I actually enjoy this work. It is, however, often like banging your head against the wall. If feels so good when you stop!
I would have loved to be in the room to hear the true magic coming from that Amp. Nice job, sir!
Thanks Rick! As always, I learned what to do as well as what not to do. Guess that's how we gain experience. 😁
Looks like you inherited a "shotgun recap" gone wrong.
I have to admire your patience... I would have scrapped it.
Great fix and don't beat yourself up Ray !....cheers.
Thanks Andy. I just get tired of making the same old mistakes over and over, when there are so many new and exciting mistakes to make!
Here's to more exciting mistakes !!@@raygianelli3612
Those Yamaha amps are not easy to work. Yes. For the reasons you mentioned. My favorite repairs are the very same you had with this unit but there’s no money in it. Definitely an experience and a bit of fun. A puzzle to be sure. I loved the part where you say “I’m not very intelligent and not the greatest tech but I don’t give up”. That’s me too! Humility is is our strong point. I believe we techs all feel that way. We know that there is so many different approaches and things we don’t know. The complicated circuits, twist and turns can make any repair turn into trouble. I’m glad I’m not the only one who can spend a ton of time on a repair. I can’t believe I haven’t subscribed already. I’ve seen your algorithm and even watched some installments. I’m hooked now.
Wow Ray. You took on quite a messy situation with this amp. Amazing how you stayed with it and got the amp working beautifully.
Thanks Jared. I kept putting it off, knowing it was going to be a rough one. I'm sorry I waited so long to do it.
WE thank you Ray !
Much appreciated, Frank!
Nice job Ray. You just reminded me to check for oxcillation on the Nikko I'm working on. Was running fine then I went to set the idle and upset the two trimmers, really twitchy and dirty i ordered replacements and will be installing them this eve... hoping it cures the protection mode issue that i didnt have before upsetting them. I always get a tip or twoi from your videos, appreciated !
As always, impressed by your diagnostic skill. Looking forward to getting that other amp we discussed back in operation soon. In the meantime, the Dynaco ST 150 is working great.
Good job on that Dynaco, BTW!
Great job! Have no regrets; you are only human. :)
Thanks Brett. I needed to hear that.
🍺👍... Yamaha.... !
Great job! That thing is a beast
Oof. You're telling me! It got heavier every time I had to turn it over.
Great job piecing this puzzle back together again
Initially I was just given the burned up board. I told the owner there was no way that was going to work!
I just checked out and subscribed to your channel. Some great work you're doing!
@@raygianelli3612 Thanks, I'm still learning here myself.
@@TrevorsBench We all are.
Dear Ray,
Excellent video. Thanks.
Should the power at the amplifier outputs be approximately the same when inputting sine signals with varying frequencies around 1-10 kHz when the sine power at the input is constant?
Uri, nice to see you!
In a perfect world they should be the same. But due to component age, tolerance, potentiometer wear and other factors, they rarely are. Good news is that they have to be pretty different before our ears can detect it.
Depending on how flat the frequency response of the amp is, they can vary by frequency too.
Not a complaint, but a little feedback... You did a great job of explaining what the problems were and your solutions. However, you gave the verbal talk over video of various meters. I would have preferred to see what you had done on the board... For example, the wire twisting that your were describing. HTH. Cheers.
Appreciate the feedback! Wire wrap is used in industry and you've seen if you've looked in many Japanese receivers from the 70's. Here's a video of the process:
ua-cam.com/video/_y7vImQs9Fg/v-deo.html
Do you take in repairs from the public ? New to your channel while searching yamaha m65 repair videos .
Al, I rarely do since I'm still working full time and trying to catch up on all of my own stuff.
Just out of curiosity, where are you located?
@@raygianelli3612 south Alabama . The closest shop to me lost their yamaha tech . Thr free places I've spoken with want to either go way too far ( don't need them polished painted etc just repaired and recapped . The others are 600 plus miles away . I can't see well enough to do them myself anymore ,so here we are .
(The few) not free . ( Proofreading Al, proofreading) lol
I have a Mx 1000u ABC channels don’t work at the same time. Would you be interested in fixing it?
Stephanie, due to other responsibilities I rarely take in work for others. Perhaps after I retire I'll do more.
the hurricane did not spare this amp !
Hurricane is a dirty word around here. 😁
Yes I know, I thought about you !@@raygianelli3612
Wow. Talk about a basket case.
The amp was too. 😝
And it didn't even come with a basket.
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