Yamaha RX-V675 AV Receiver - Front Display Freezes or Distorts Intermittently
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- Опубликовано: 4 июл 2024
- A local drop off of a Yamaha RX-V675 that came in with a very interesting issue. The front display would distort or freeze, however it was very intermittent and took some time to track down.
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00:00 intro
00:24 The display schematic
01:31 Some voltage measurements
03:20 Replacing the 3.3V regulator
04:59 Voltage after part replacement
05:34 Testing after part replacement
06:09 Final thoughts/Closing words
07:49 Bonus material
09:17 Bloopers 
Наука
The best part about this repair is no capacitors needed replacing; just a flaky surface-mounted component was eventually found to be the culprit.
Once again, the technician's best friend "Mr. Acetone" makes a brief appearance. 😎Hopefully another happy customer as well! 👍👍
Amazing that you diagnosed that tiny regulator for the IC.
Thanks 🙏 Brother...
Interesting one that, and one that would flummox a lot of techs I'm sure - i don't associate weird intermittent problems with voltage regulators. That's why you're a pro and I'm just a tinkerer 😁
Another great repair video! I always enjoy your repairs!
Great repair! Thanks for sharing.
I usually check first for visual problems then check for proper voltage. Nice work!
Lovely repair =D
Good that you could replace the chip without the usual AV receiver total tear down just for a simple part swap! 😄
great work
Thank you.
I have a HTR-3067 , I'm having a constant audio buzzing , coming from all the speakers, decreasing the front panel dimmer light lower the buzzing but I can decrease down to -4 only, I wouldn't mind to even turn off completely the front display light to get rid of this buzzing.
I bought the exact same receiver, faulty as well, for 25€
It would not turn on and go to protect mode, due to an incorrect power supply rail voltage
I managed to byoass that security by adding a 10k resistor from the monitoring rail to ground, and it now works fine, except for analog video, but I don't really care about it honestly
Maybe I'll try to find another board, but that doesn't seem to be an easy task...
Well, I guess when you use the word “virgin” in your video you get some of these nonsense comments 🤦♂️. Great work as always!
I have an RX-A2010 that has a similar issue where the display gets sort of garbled after loud volumes until I restart the unit. Do you think it's having a similar issue?
humming noise but no sound in RX 485
What fluid you use to clean off the flux?
Acetone
So if you did not have the IC you needed meant not fixable?...
I may have used a fixed voltage regulator if I could not get the exact IC as replacement.