fixed a tv today . no idea on name it has ..vestel supply board .. one shorted diode out of 3 working together .2 good ones way out of matching . 3 matched ones put in . letting customer test it ..
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Hi all,
I have a TX-NR609 which shows the usual issue with the DSP on the HDMI board.
How do I know? I managed to revive it with heat. Then it failed again. I reballed it, it lasted 3 months then failed again for good.
I ordered one from China - not knowing that
1. It's likely fake
2. It's likely pulled from another broken machine
3. There is a revised version which does not fail, which was never sold outside of OEMs so unlikely to be found online
I installed it and it didn't work.
The bottom line is... -
Dear all, I am trying to troubleshoot an Acer Aspire 5 A514-55 that won't power on. I'll describe the symptoms and my findings so far, and I would like to seek guidance and suggestions on possible suspects in terms of cause/component failure. My initial thoughts are battery charger IC and/or ideal diode/MOSFET (that switches between incoming DC and battery power), but I could be totally wrong on this.1) Laptop was working fine on battery, then user realised battery was running low. Plugged in AC adapter but noticed it was not charging (LED on AC adapter plug did not light). Eventually shut down... -
As the title say, this is pretty common proble with x99 board.
Since the 1.05 ME voltage was too high, I suspect PCH is damaged ... but anyway, I want to give it a try bypassing the PS chip .... the idea came up
reading this post on a chinese bbs ...
https://bbs.pigoo.com/forum.php?mod=...591&pid=949894
I think he is right .... but I already try and the board, this time, shut off immediately (voltages here is 1.05 not 1.5 .... he probably got confused).
Note:In case you ask yourself... -
Hi all
I am trying to find a replacement capacitor for a CapXon KM 100uF 400V. I have read that the big ones really go wrong but it is the last one left on the power supply board that has not been changed and the TV is still playing up so it is getting swapped too.
I have read that I need to find a replacement cap with the same or higher ripple and the same or lower ESR, with all the usual being matched. The ripple is easy to match but the ESR seems to be a challenge.
From the KM datasheet I have got, dissipation factor = 15% (therefore 0.15).
I have... -
Hello all,
New to the forum and glad I found you guys.
Wanted to ask your opinion on an issue i have with my Alesis RA500
Unit was working fine until recently and when I power it up the usual two orange speaker protection lights come on and after the usual 4.5 seconds they go out and i hear the click of the protection relay but then I get no output on either channel no blue bars and i've tested input on jacks and XLR but nadda.
Any pointers would be greatly appreciated....