Hello everyone,
A massive(?) update to this problem.
October 2022 my Yamaha stopped turning on (even though the standby light was still lit). Pressed the power button, nothing happened, no response etc. Oh well I thought, that was that.
To quote myself in the previous post:
david4 wrote:
this will be something to visit in the future when keeping the unit plugged in (on standby) no longer works.
Later on that week, I had been watching a few TV shows on my HD media player.
After watching a few episodes I turned off the media player and just before turning off the amp I decided to try and turn on the LD player. Much to my surprise, it turned on without any problems whatsoever. Very strange. But okay.
Following night, I tried to turn on the LD, as above, nothing happened. So I watched a few TV episodes of something, again, after finishing watching TV, I tried the LD player, and again, it turned on!
What the heck ?
Now, my AV rack has the amp on the lowest shelf, the middle shelf houses the Yamaha LD player and the top shelf has my two bluray players and a media player which is connected to some HDD towers.
Upon further investigation, the amp has heat vents on the top of it, and the shelves in the AV rack have holes for "air to flow up/out" -- so it appeared the heat coming from the amp had been heating the LD player's capacitors on its power-board.
That weekend, to test my theory I took the player back out of the rack and took off its case on the dining room table, plugged the player back in, standby light was lit, pressed power on, and again, nothing. I removed the cover, manually opened the tray and got the hair dryer from the bathroom. Being *very* *very* careful I waved the hair-dryer over the capacitors on the power-board once or twice, pressed power on and the LD player turned on and loaded as per normal.
Right, it seemed the caps were well and truly on the way out, and the only way to bring them back to life was literally warming them up.
Real life then got in the way of things for a bit.
Fast forward to this August, and after watching numerous youtube videos about soldering and desoldering, and many thanks to @brmanuk 's post
brmanuk @ [CLD-D780] Won't power up - PCB re-cap (FIXED!) , which helped with the capacitors, I ordered new capacitors for the VWR-1268-B (which used exactly the same capacitors as his PCB in his post), making sure I got the volts and uF correct for each capacitor.
Yesterday, I spent most of the morning and part of the early afternoon desoldering all the capacitors from the power-board and soldering on the new ones I had ordered. I made doubly sure that the capacitors were the correct rating/voltage, had been oriented the right way etc and my soldering of the capacitors was halfway decent (not complete rubbish)
I put the board back into the player, the standby light was lit, I pressed the power button and the machine powered up immediately, as it used to, as it should.
@cplusplus 's comment from
cplusplus @ [CDV-W901] Red standby lit, no action power button pressed , a blind re-cap of the entire power-board seems to have fixed my problem.
So, that's where it is at-the-moment, problem seems to be fixed.
A big Thank You to @cplusplus for all his comments/help with this problem, "Thank you", and thank you to all who read this.
Here are two photographs of the power-board, one photo of the PCB before the re-cap and one after the re-cap.
Before:
Attachment:
VWR-1268-B-(1)Before recap.1.jpg [ 201.13 KiB | Viewed 1839 times ]
After: ( Please ignore the nasty burn marks in the glue near C20 and C21.
)
Attachment:
VWR-1268-B-(2)After recap.1.jpg [ 201.18 KiB | Viewed 1839 times ]