Hi folks, I have this matsui 42 inch lcd tv, I am not sure about the model as the sticker has been damaged and is no longer readable, I have tested all the caps on the psu and they're all ok, What would be the next thing i should check which could cause this error?? Sorry I'm being a bit vague but i know nothing about the set and have no model number to search for common faults.. :-)
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Re: Matsui 42 inch LCD stuck on standby Blue light
is there any model numbers on the psu pictures of the back of the set showing all the boards may help us reconise it. -
Re: Matsui 42 inch LCD stuck on standby Blue light
Hope these help..Attached FilesComment
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Re: Matsui 42 inch LCD stuck on standby Blue light
That's OK.
Inside the TV (remove back cover) there should be a set of stickers affixed to the panel - similar to this one (see pic).
On one of them will most probably have the model # and/or the panel id #.
If you can't find it, just post the power supply part # (stamped on the board).
If you could take a photo of both the stickers and the power supply board, that would be great.Attached FilesComment
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Re: Matsui 42 inch LCD stuck on standby Blue light
That is a Vestel PSU
17PW16-2
Its pretty much the same as the PW15.
Common fault is C877 C878
But check :
IC829
Q809
C877*
C878*
C817
C892
C801
C901
R817
R818
R819Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
bottom right of psu by the yellow transformer theres a small ic behind c801 capacitor is the ic damaged the board looks burnt/brown by it.Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
Wow, that was fast.
I was still trying to look for an ID.Last edited by kenny1070; 12-08-2013, 05:10 PM.Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
Ahh great, Thank you everyone.. So would this be the only component or would there likely be further damage, I could probably solder a new one in but dont think i could fix anything much smaller than that, if there is a lot of components gone then a replacement should do the trick right??...Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
can you take a picture of it close up please?Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
yes replacement would work but lets first see what we are dealing with... Do you have a DMM?Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
DMM - Digital Multi-MeterComment
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Re: Matsui 42 inch LCD stuck on standby Blue light
i would also be concerned if the board was badly burnt around the ic leg mounting holes etc looks very badly burnt whats the underside of the psu board look like under that ic?Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
Oh....lol... yeah i have one... Its a crappy one of fleabay but it does the trick... Got 2.. :-)Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
CloseupAttached FilesComment
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Re: Matsui 42 inch LCD stuck on standby Blue light
on a close up pic of the back of the pcb the burning looks like it gone a fair way through the pc board you may want to wait to see what other members advice is.Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
Looks like the 5V standby IC partially blew up; frankly, I'm surprised it works at all!Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
would the board be ok tom or would the burnt carbon etc cause more issues inc more pcb burning in your opinion.Comment
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Re: Matsui 42 inch LCD stuck on standby Blue light
By the sounds of that then ill just go with the 2nd hand replacement,Comment
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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... -
The problem with my TV is very similar to an earlier post but there was no final solution posted.
When the TV is first turned on from cold it will not turn on. The red standby light begins pulsing and a high pitch whine is heard. The back light remains off. If the TV is left trying to boot like this and then turned off and on again a few times then eventually it will turn on and sit there working all day long.
I initially suspected the PSU after spotting this kit for sale,
http://www.ohmsupplies.co.uk/epages/...ops/62027733/P... -
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... -
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 -
So this is the second tv this week that comes in with the same problem. The power supply looks good , There is a solid 3.3v stand by voltage. The tv doesnt react to button presses or from the remote. The Processor gets slightly warm and thats about it.
My question to other veterans on this forum is , what is more likely to be bad , the processor , or the memory chip. in this case there is a toshiba tsop48 fk4924 , tc58dvm92astaj0 . At the moment i do not have my hands on the programer but i will be buying it in the following weeks. i Can see that on 90% of tv boards there is a jack for...
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