Hi all , my tv is an ONN AO42ZID power board FSP312-2MO1. It started playing up a couple of months ago, stripes and colours flashing on the screen when first turned on. Tv would eventually come on and stay on all day, yesterday it never came on and the standby light flashed and it sounded like it had a heart beat. After a quick search I found the caps fix solution, so I replaced the obvious bulging and swollen caps, 6 of them. When reassembled tv had no power at all, so I checked and replaced the main fuse. Reassembled again and the power board had power, but still no standby light, checked the inverters all had correct voltage 24v + 12v, could also hear the power humming through the board. It's been a while since i worked on circuit boards, about 8 years, used to build pcs 12 years ago, all seems similar and fimialar still. Any help and or advice greatly appreciated.
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Re: AO42ZID Replaced caps + T-5 fuse repair failed
Double posting in multiple subforums will not make me happy. I answered you here. Pick one thread and keep everything in it otherwise it makes more work for us.
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Re: AO42ZID Replaced caps + T-5 fuse repair failed
Sorry about that retiredcaps. Will get a decent camera before I post pics. ThanksComment
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If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
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Re: AO42ZID Replaced caps + T-5 fuse repair failed
make sure you connected all the cables back, ive done this before where ive forgot to put the standby led and button cable back in, then been scratching my head for 10mins before realising....lmaoComment
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Normally, I never post repairs this quick after I do them, because… I am usually very slow.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.
For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).
https://www.badcaps.net/filedata/fetch?id=3591771
https://www.badcaps.net/filedata/fetch?id=3591772
It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:
https://www.badcaps.net/filedata/fetch?id=359177... -
Hey guys, bit stumped with this laptop after replacing 2 blown components i.e., MP86493, MP2979A.
To begin with, this laptop was dead-dead.
Now with replaced (visibly) blown components, i do get some progress; after connecting battery or main cable;- am getting white power led
- 5-long-flashes on CAPS Lock and NUM lock
- then, fan full speed
- CPU heats up some (smaller die PCH, does not)
- always constant black screen no matter what's tried
- no USB recognition
- no HDMI output
I tried... -
LG 42LB5D (42LB5DF-UL) from 2008-01, unit is in good shape and no obvious heat damage or cracked solder on the boards.
Problem:
On first power-up the power LED flashes green about 18x and then stays solid. No backlight or image is present. Click power button, wait 10s for a click and the LED turns red. Wait 1-2s and hit power again and maybe it'll power up fully after 6 green flashes. If it doesn't light up on the sixth flash then the cycle repeats.
It seems that if the mainboard power is left on for a few minutes (solid green power, no backlight, no image)... -
Hello,
First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.
I recently came into posession of a Heathkit IO-4205 5MHz Dual Trace Oscilloscope. The documentation is copyright 1978. I'm told it works.
I opened it up to check the caps before I applied power, and found the following black caps and wanted to know what they were. They are on the power supply board. I was able to read the name and model and came up with, "Nytronics 162J-1, 0.1uF, 20% tolerance, 2000VDC."
...
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