Re: Atec AV420D No Standby
OK, and what do the D5V, D12V do during this?
Seems like main board fault.
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Re: Atec AV420D No Standby
ok was going through checking all the pins for voltage to see if they were correct and funnily enough the screen turned on and it worked but theres a flicker to the screen including menus too. turned it off and back on and now no picture again and no standby light
so seems it has to get warmed up so to speak before it will turn on, caps?Last edited by anotherdude; 12-22-2013, 10:24 AM.Leave a comment:
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Re: Atec AV420D No Standby
Check if the PSU 5V standby is stable or not.Leave a comment:
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Re: Atec AV420D No Standby
found this thread that tom66 fixed https://www.badcaps.net/forum/showth...highlight=atec
there not the same psu so not sure it's the same fault
what should i be looking for if standby voltage disappears?Leave a comment:
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Atec AV420D No Standby
Picked this up yesterday for £30 fault was described as "won't turn on it used to turn on after 20 minutes but now theres no standby light"
So i took the psu out and removed the old fuse near the 250v input and replaced it with another I had off a faulty board.
It now gets a standby light for all of 5 seconds then konks out, no sign of any other damage anywhere
top of caps get low voltages and gradually drop as the standby light dissappears
samxon caps tooAttached FilesLast edited by anotherdude; 12-22-2013, 08:00 AM. -
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Hello everyone,
I got a Samsung The Frame 55 inch TV for free from uncle cause it is not turning on anymore. I am in the second year of training as an electrician so I have knowledge already but I am far away from to be a pro.
The TV has Standby but ist not turning on. A Friend of mine owns a 50 inch Frame TV so I checked the One Connect Box and the One Connect Cable there. Both are good and working normally. I have opened the TV case and measured some voltages on the Board.
What I already found is that the 12.8V are not an the connector to the main board connector to the power... -
Hi everyone,
I'm trying to troubleshoot and repair this old LG OLED curved TV, model 55EG910V.
I did some basic troubleshooting and reviewed most related posts here, but I wasn't able to isolate the issue.
The TV shut itself off during playback and never came back to life - the standby light remains off. My dad claims that it has happened a few times in the past but the issue resolved itself after some time. Not this one.
After checking the basics I did the following:- I measured all voltages and as expected the only active supply is the 3.5V standby. It
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TV: Samsung QLED QE65Q7FNAT
PSU: BN4400940A
MB: BN94-12832K
I got the tv in spring 2024. At that time it started, then ran 60 sec and poweroff. Seemed like reboot issue. I didn't have time and room to check it in summer so I plugged it in and now the standby light is on. I press button on remote, standby light goes off and tries to start?. No picture or backlight on LCD. I thought about removing diodes like in this thread: https://www.badcaps.net/forum/troubl...sung-qled-q60r... -
picked up a tv and when the power is plugged, the standby light flashes real quick then goes off. of 3.3, 12, 24v is all there but i couldnt find any 5v on the back-end board. ON/OFF is low, which it seems is what turns on the backlight so i removed the wire at the back-end board and put a 10k resistor to the 3.3v, which when plugged in brings on the backlight for a split second and also a blue light "LED1" on the inverter board, which goes off after a short time.
am i missing something to bring on the backlight or is the inverter/ccfl gone bad? would that cause the inverter board...12-01-2023, 09:55 PM -
Hey Everyone,
So I've got this Samsung and the reported issue is that when powered on the backlight comes on, but no picture, no sound, it will flicker, the standby light will flash red twice and repeat the whole process...each loop lasts about 15 seconds.
I've googled the issue and understand it is likely a panel/driver board issue, but was hoping the "tape method" could be successful. Before I did that though, I disconnected the left LVDS cable and powered the TV on. This time I got sound, no picture and the two blink standby light stopped. Did the same...03-27-2023, 07:01 PM
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