Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

[rccrasher65]

Gentlemen, I have a Panasonic plasma with an original 4 blink sos. I downloaded the correct manual for my set and followed the detailed flow chart, and discovered a shorted v-sus line. Continued to follow the chart and discovered bad Sc board. It took a while to learn how to disconnect everything necessary, as I have never worked on anything but LG and Samsung Plasma's. All other boards check ok. I would like to confirm my buffer boards are ok I do not quit understand how to do this part of the chart. Can I remove the SC board completely and then check for resistance on the points listed in the manual, or should I put SC back in? Thanks for all the Help in advance, George.

[tw2005]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Gentlemen, I have a Panasonic plasma with an original 4 blink sos. I downloaded the correct manual for my set and followed the detailed flow chart, and discovered a shorted v-sus line. Continued to follow the chart and discovered bad Sc board. It took a while to learn how to disconnect everything necessary, as I have never worked on anything but LG and Samsung Plasma's. All other boards check ok. I would like to confirm my buffer boards are ok I do not quit understand how to do this part of the chart. Can I remove the SC board completely and then check for resistance on the points listed in the manual, or should I put SC back in? Thanks for all the Help in advance, George.

If you're doing a resistance check as per the G20/G25 troubleshooting guide then you should be able to it insitu with the boards in, SC out. Disconnect the interconnecting ribbon between the sd/su. measure and record results, reconnect that ribbon when done.

this will save the hassle of getting the panel ribbons back in stright which can be fiddly.

you'll need a meter to measures about 6Mohms however if you have one that goes to 2meg, and it goes OL then that should be good enough.

usually Vfo will go short and the others can also go short or have a resistance substantially lower

Generally speaking the buffers survive, however, I have had one i did not check where both sd/su where shorted on the vfo and the 5v_f lines were substantially out. Result of that mistake was blowing up a brand new SC board

Moduslink have a good price for the 54" board $68 for repair return. Taking labour and parts prices into account I would not bother attempting a self repair with a kit unless you've done one before.

http://www.moduslinkptstvboards.com/txnsc1lvuu/

[Shinju]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

I can vouch for Moduslink work, I have used them a few times. They replace everything even stuff that doesn't need to be they do it to assure total stability.

68 is a good price.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

If you're doing a resistance check as per the G20/G25 troubleshooting guide then you should be able to it insitu with the boards in, SC out. Disconnect the interconnecting ribbon between the sd/su. measure and record results, reconnect that ribbon when done.

this will save the hassle of getting the panel ribbons back in stright which can be fiddly.

you'll need a meter to measures about 6Mohms however if you have one that goes to 2meg, and it goes OL then that should be good enough.

usually Vfo will go short and the others can also go short or have a resistance substantially lower

Generally speaking the buffers survive, however, I have had one i did not check where both sd/su where shorted on the vfo and the 5v_f lines were substantially out. Result of that mistake was blowing up a brand new SC board

Moduslink have a good price for the 54" board $68 for repair return. Taking labour and parts prices into account I would not bother attempting a self repair with a kit unless you've done one before.

http://www.moduslinkptstvboards.com/txnsc1lvuu/

Thanks, TW2005, thats where I plan on sending the board, I'll get back with the results of the test. I have all the necessary equipment, DMM, hot air station preheater, solderstation, ect. Love tinkering with electronics, follow all yours and Tom's threads, learned quite a bit from everyone on here, and Thank you, and all who help us to get these Tv's back on line.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

I can vouch for Moduslink work, I have used them a few times. They replace everything even stuff that doesn't need to be they do it to assure total stability.

68 is a good price.

Shinju, Thanks, Thats where I'm sending my board. Do they send the bad parts back that they replace? was wondering if they did that.

[Shinju]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

No, but I never asked if they would.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Thanks guys, I'll post results of buffer test later this evening. once again thanks for all the help.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

results coming sorry for the delay.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

results coming sorry for the delay.

Gentlemen, I have some results, I would like to share, for my buffer boards. Starting with the SU upper board. TPSU15 =5.91m ohms VFO TPSU16 =219.1K ohms VSCN-F (TPSC1) TPSU17 =9.48m ohms 5V_F On to the SD board. TPSD29 =6.23m ohms VFO TPSD28 =219.8k ohms VSCN-F (TPSC1) and finally TPSD26 =35.51m ohms 5V_F All tests were done according to the manual slide 43. If anything looks out of place please let me know, thanks for all your help.

[tw2005]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Gentlemen, I have some results, I would like to share, for my buffer boards. Starting with the SU upper board. TPSU15 =5.91m ohms VFO TPSU16 =219.1K ohms VSCN-F (TPSC1) TPSU17 =9.48m ohms 5V_F On to the SD board. TPSD29 =6.23m ohms VFO TPSD28 =219.8k ohms VSCN-F (TPSC1) and finally TPSD26 =35.51m ohms 5V_F All tests were done according to the manual slide 43. If anything looks out of place please let me know, thanks for all your help.

safe to use

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

safe to use

Thanks TW2005, for looking over my test results, going to send my board out this week to Moduslink.

[Shinju]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Did you already send it out to them or is he the first time?

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Did you already send it out to them or is he the first time?

First time for board repair,no I haven't sent it yet. Next week. probably mon.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

First time for board repair,no I haven't sent it yet. Next week. probably mon.

sending board out for repair to Moduslink, anything special I have to do, Thanks again.

[Shinju]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Make sure to pack it well and follow their instructions.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Thanks, I'll do that.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

All packed up and ready to go, will let you know how it works out, Thanks.

[Shinju]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Cool, keep us posted!

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Cool, keep us posted!

Will do, thanks.

[rccrasher65]

Re: Panasonic Viera TC-P54G25 4 blink sos to 7blink sos

Received My repaired SC board from Moduslink today, getting ready to install it. Anything I should watch out for, or recheck, before I turn on. Don't want to blow anything, if I missed something with the buffers. thanks guy's.