This guy has an RCA 42PA30RQ

[tom66]

Re: This guy has an RCA 42PA30RQ

On the X-main test at bottom end of C4022.

[Bling23]

Re: This guy has an RCA 42PA30RQ

c4022 is a small cap...but here is what i get

[tom66]

Re: This guy has an RCA 42PA30RQ

My error. C4032.

[Bling23]

Re: This guy has an RCA 42PA30RQ

LOL...got it but I get noting and i hear the humming from the x main

[tom66]

Re: This guy has an RCA 42PA30RQ

Odd. You have good Vs, Va but no outputs from either board. Is control board LED blinking?

[Bling23]

Re: This guy has an RCA 42PA30RQ

i only get good Vs/va when I disconnect CN 5000 from the Y-main...when I connect CN 5000 I get multiple clicks from the relay, humming sound to the x-main, and no Vs/Va from PSU

[tom66]

Re: This guy has an RCA 42PA30RQ

Y-main is dead then.

[Bling23]

Re: This guy has an RCA 42PA30RQ

control board LED is blinking

[Bling23]

Re: This guy has an RCA 42PA30RQ

Ok I'll replace the Y board...I checked the Y-buffer per your video and it checked out fine..no shorts

[tom66]

Re: This guy has an RCA 42PA30RQ

One thing to check is if you get good voltages with X-main unplugged from Y-main.

[Bling23]

Re: This guy has an RCA 42PA30RQ

what I don't understand is the initial problem with the set was spackling on the screen..I removed the Y-main to check for shorts and found none.when I re installed it, thats when I started getting the problem with the multiple clicking from the relay. So if the LED on the control board is blinking, does that mean the control board is fine?

[tom66]

Re: This guy has an RCA 42PA30RQ

Blinking light indicates control board is running.

When you removed the Y-main it's possible you damaged it from ESD...

[Bling23]

Re: This guy has an RCA 42PA30RQ

with X-main unplugged from the Y-main...I get zero volts Va... 15 volts on the D15v pin an zero volts Vs

[Bling23]

Re: This guy has an RCA 42PA30RQ

here are the readings in order of the pics...

[tom66]

Re: This guy has an RCA 42PA30RQ

The Y-main is most likely bad then.

[Bling23]

Re: This guy has an RCA 42PA30RQ

Ok Tom I'll replace the Y-Main...but will that repair the sparkling problem on the screen?

[tom66]

Re: This guy has an RCA 42PA30RQ

You can adjust Yrr/Yfr on this set to eliminate that later. I have done it before on the PS42B450. (Same TV, different main board & badge on front.)

[Bling23]

Re: This guy has an RCA 42PA30RQ

Okay...thank you for all your help, I'll order a new or used/tested Y-main from ebay unless you recommend somewhere else?? I'll get back to you with my progress

[tom66]

Re: This guy has an RCA 42PA30RQ

eBay is fine, usually.

[Bling23]

Re: This guy has an RCA 42PA30RQ

okay thanks..have a good day..and I hope the photos I sent were of good quality for others to see