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**tw2005** · 08-10-2017, 03:11 AM

Re: P42G15 7 red blinks

Originally posted by meciu View Post

Hi,

So I've got still broken P42G15E.
Not so long ago I've started a thread with 5 blinks - > dead SC board.

So today my new/old working SC board arrived, and after replacement I've got 7 blinks (screen flashes once and I can see a bit red tint on upper corners).

So what is the next step to fix this problem?

Edit.
As I started a thread few days ago with a question regarding board revision the new SC board is a bit different. I had rev AH and the new is rev AD.
Spotted differences:
Electrolytic caps
C414 old 250v 140uF, new 250v 250uF
C415 old 250v 140uF, new NONE
C419 old 250v 140uF, new NONE
C412 old 250v 140uF, new 250v 250uF
C417 old 250v 140uF, new 250v 250uF

This blue caps
C418 old NONE, new PMJI55J
C633 old PMS305J, new PMS405J
C632 old PMS305J, new PMS405J
C631 old PMS305J, new PMS405J
C634 old PMS305J, new NONE

I would have kept the post with the original thread, anyway forget about the revision difference, a couple of things you can do.

One would be check the sd/su for being shorted out or this would be a good indicator if it's the SC or not.

perform the SD/SU isolation test where you disconnect those from the SC, remove the 4 Vfg grounding bolts for the SD/SU. On the SC at the small 2 pin connector SC50, jumper those 2 pins together, turn the TV on and see if it stays on or still 7 blinks. If it stays on, that would mean it's not the SC

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P42G15 7 red blinks

P42G15 7 red blinks

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