Panasonic 50in Plasma TC-50PS14 7 blinks

[Fubar701]

Ok, this is my first thread so bear with me! I run the repair center for RainWise Inc so I have a decent electronic background and fix many electronics on the side for extra cash, normally video game systems and this is my first T.V, was given it for free for fixing an xbox 360 so I have nothing invested in it and plan to resell it if I can fix it. Basically not looking to invest a whole lot in replacement parts if thats what it comes down to. Anyways, onto the topic....

This is a Panasonic TC-50PS14 and the power light is flashing seven times. I opened it up and it was DUSTY, fans were bound up with dust, got everything clean and this is the inside...


(This is not the exact one I have, I couldnt figure out how to upload my image so this is one off the internet, exact same model though)

So anyways, I disconnected the SC board completely which also disconnects the SU and SD boards and the tv now blinks 6 times. I'm thinking that means a bad SC board which does not seem readily available. Does anyone know any other testing methods? I'm hoping it is the SU or SD since those are quite cheap. Feel free to offer any advice or correct anything I may be wrong about...

[tw2005]

Re: Panasonic 50in Plasma TC-50PS14 7 blinks

disconnect the 3 connectors from the SC to the SD/SU. remove the 4 medium sized Vf gnd screws that attach the buffers to the SC.

On the SC there is a 2 pin connector SC50. Jumper that, then turn TV on . If it starts up and stays on with no 7 blink then SC is good and fault is the SD/SU. If not then Sc is bad but you'll still have to check the buffers for shorts.

[Fubar701]

Re: Panasonic 50in Plasma TC-50PS14 7 blinks

Awsome, thank you very much. I'll do that first thing in the morning.

[tw2005]

Re: Panasonic 50in Plasma TC-50PS14 7 blinks

Awsome, thank you very much. I'll do that first thing in the morning.

Odds are it's the SC, there are repair kits, not sure how hit and miss they are. That will be your cheapest option since you're already electronics trained.

TNPA4782AB?

There are board repairers out there, around the $150.

SJ has a $30 kit but there's varying degress of what comes with these.

[Fubar701]

Re: Panasonic 50in Plasma TC-50PS14 7 blinks

Yea I'm sure the kits are decent but we order prolly $5k a month from mouser and digikey. Can probably get the parts sneaked onto a order but can only sell the thing locally and it is 5 years old so realistically might get 200-300, may just part it out on ebay if the SC is gone.