Panasonic TC-P58S2 7 blinking red

[OneBadxxx]

Panasonic TC-P58S2 7 blinking red lights no sound no picture. Manufactured Oct 2010. Tried unplugging and same conditions. If I unplug z-sustain I get 6 blinks. Sorry a newbie here. Asking for a path to hopefully narrow down to a board or 2 to replace with guidance here unless with patience I can go further.
Please recommend next steps or a source for a service manual, if its here I could not find with a search. Also welcoming a reputable source for replacement parts.
Thanks in advance.

[tw2005]

Re: Panasonic TC-P58S2 7 blinking red

7 BLINKS , normally SC/SD/SU related.

TNPA5175AB , TXNSC1LYUU is the 58" version SC board.

TNPA5174,TXNSD1LYUU
TNPA5173 ,TXNSU1LYUU are the 58" SD/SU boards

Viewing the TV from the back, left side you have SU,SD (Ybuffer boards), SC board(ysus,ymain).

Right side, SS (xsus,xmain,zsus)

Panasonic description of 7 blink
Scan Drive Circuit and Connection between the SC board and SD/SU boards.

Missing Vsus. Abnormality of the scan circuit output, the 15V_F, the scn_pro, and Vscn circuit. Loose or open Connection between the SC board and the SD/SU boards(SC41, SC42, SC46). Open or loose connection between connectors SC2/P2 Wrong diagnostic by the A board Defective panel.

To determine which board/s
1. Remove the 4 VF_GND screws on the SD/SU boards.

2. Unplug connectors SC41, SC46, and SC42 on the SC board.

3. Jumper/short pins 1 and 2 of connector SC50 on the SC board.


Turn on TV, When this is done, the display is completely black (No picture)
If it turns on with no error, SC board passed, SU,SD at fault.

If faults, SC at fault, buffer boards should be checked as well in case they have shorted before installing a new Sc board.

42" guide should be good enough to help here.

[tw2005]

Re: Panasonic TC-P58S2 7 blinking red

http://www.moduslinkptstvboards.com/txnsc1lyuu/

https://www.encompassparts.com/item/...1LYUU/Pc_Board

[OneBadxxx]

Re: Panasonic TC-P58S2 7 blinking red

tw2005 - many thanks for your quick response.