Re: Viewsonic VG2230wm no power
I measured it like you said with the power cord plugged and I read just like you said 168.8 VDC.
What next?
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Re: Viewsonic VG2230wm no power
What voltage are you getting at that main large filter cap, measure right at the two legs, it should have about 160~170VDC. Just be careful not to touch anything with your hands or body since you are working in the HOT side of the circuits.Leave a comment:
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Viewsonic VG2230wm no power
Greetings,
I have a LCD Monitor Viewsonic VG2230wm that doesn't power at all. If I plug the power cable to the monitor anything respond, even the power led doesn't turn on. So I decide to open my monitor an verify the power supply board hoping to find some bad caps in the board. But unfortunately all the caps in the power board looks good. Even I test directly on the board with an ESR and seems to be no problem on them. But the Monitor no power on. I notice that I have some caps with the same specs but different brands, I don't know if that could be the problem their tops are flat.
So I really need some guidance here with this. Here are some pictures of the board.
http://sdrv.ms/14NK1J1
Last edited by snakezz; 08-31-2013, 03:39 PM.
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
[HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:- Motherboard: LA-J871P Rev: 1B
- Model: Acer AN515-55-59MT
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- SNID: 03902728734
Initial Issue
The laptop initially presented graphic issues and driver failure (Code 43) for the GPU.
After preventive maintenance (cleaning, thermal paste, etc.), it powered on normally. We disassembled it again to inspect the GPU, reassembled... -
Hi and thanks in advance for any input you might provide!
I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO
Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this... -
Hi everyone,
I am trying to fix a samsung washinmachine power supply main board.
I already replaced it with another one to fix the machine but i want to try understand the issue with the old board.
Therefore i hope to be able to get some help to explain what to check in order to troubleshoot.
The power supply board reference is the following: DC41-00189a
I have followed one thread (https://www.badcaps.net/forum/troubl...ingmachine-rel... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of...
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