RCA 42PA30RQ plasma tv problem

[Stude]

Re: RCA 42PA30RQ plasma tv problem

X Main shows a short.
Thanks for everyone's help. I think next time, I will save myself money and time and just send the tv to be recycled from the start.
We have all Panasonic tvs now, so hopefully won't have premature failures. 18 months is a pretty short life span for a tv, not impressed with this RCA/Samsung for sure.

You all have a Merry Chrisymas and happy New Year.

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

I have a similar problem with my RCA 42PA30RQ. I've read various posts but none of them cover my exact problem. I am also unable to create a new post as I just became a member today..

[newtothis]

Re: RCA 42PA30RQ plasma tv problem

Ok whats the issue?

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

My VA with everything accept the Y buffer unplugged is staying steady at 120..

[newtothis]

Re: RCA 42PA30RQ plasma tv problem

OK I think Tom66 would be best at helping with this...

Take pics of each board and then one of the entire back of the chassis so we can see everything.

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

Here is the pictures..

[capkid]

Re: RCA 42PA30RQ plasma tv problem

If you'd said the opposite was happening, you could probably point to the Y-buffer as being the issue. Otherwise, the Y-main being disconnected pretty much means the Y-buffer is disconnected, too. How does your VS voltage look?

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

Both stay steady over 200 (200 is max on my multimeter). With the Y main plugged in the voltage drops.

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

As far as some other things go, there is a slight screen glow I don't notice any pixels when I hit the menu button, one normal click on and the LED on the control board is on for maybe 5 seconds and off for about 2.

[capkid]

Re: RCA 42PA30RQ plasma tv problem

Ok, so your issue is a typical one. I'd stop right there and pull both the Y-main and X-main to check the heat sink components for shorts. If you continue to test without pulling boards, you may do more damage.

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

I read something about that but something confused me. I don't remember exactly what is was but I should be testing the resistance? If so what readings should I get?

[newtothis]

Re: RCA 42PA30RQ plasma tv problem

high resistance means no shorts, low resistance means a short

[capkid]

Re: RCA 42PA30RQ plasma tv problem

Here you go: https://www.badcaps.net/forum/showpo...17&postcount=9

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

Nothing reads a 0.00.

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

as far as "low" resisatnce goes Q5013 only reads 5.76 whereas the other 3 prongs with offset center prongs read a flat 10. I don't know if that makes a difference or not.

[capkid]

Re: RCA 42PA30RQ plasma tv problem

Did you follow the steps in the thread I posted?

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

As far as testing the diodes and transistors yes. I just triple checked. I don't seem to have a short in the X or Y boards.

[capkid]

Re: RCA 42PA30RQ plasma tv problem

Something else to try: https://www.badcaps.net/forum/showthread.php?t=26790

[Maushinator]

Re: RCA 42PA30RQ plasma tv problem

Okay, I've located the 4 pin. The only problem so far is they aren't numbered. I'm assuming the pins are from left to right 1/2 then 3/4 on the bottom?

[newtothis]

Re: RCA 42PA30RQ plasma tv problem

Can you take a close up pic of the 4 pin connector?