Seiki SE39UY04 Red standby light, not powering on

[HughR]

This problem description is a lot like https://www.badcaps.net/forum/showth...633#post898633

My Seiki SE39UY04 TV stopped working. I've used it for almost four years as a computer monitor.

Symptom: the status LED is solid red. I think that this means "standby". Pressing "power" on the remote and on the TV doesn't appear to change anything. Normally it would turn blue.

Inside, the only odd thing that l've noticed is a spot on the power supply board looks toasted. This is where one wire from the transformer joins the board.

Here's a picture of the same model of power supply board, sourced from ShopJimmy.com:
https://assets.shopjimmy.com/media/c...0-3618-top.jpg

I've attached pictures of the front and back of the burnt spot.

I think that the burnt spot is on the hot side of the upper transformer (based on the silk screening on the board).

What should I do?

• Try to resolder the connection, guessing that the burn is due to a bad (high resistance) connection? (What are the chances that a PCB layer is damaged too?)
  
• Buy a new Power Supply board? (They seem to be available, but not in Canada.)
  
• Try to figure out if something is drawing too much power across that connection?
  
• Other things that I haven't thought of?

[R_J]

Re: Seiki SE39UY04 Red standby light, not powering on

Clean the carbon off, and remove any old solder if you can, then resolder it with new solder, (both connectios to the tranformer need resoldering) then resolder any other connections that look similar. Transformer pins and transistors that are mounted to heatsinks should be resoldered. that should fix it
The solder connection got weak over time and then started arcing, no big deal, once resoldered it will last for ever.

[HughR]

Re: Seiki SE39UY04 Red standby light, not powering on

Thanks R J: it worked. I'm using the monitor to add this comment.