Re: This guy has an RCA 42PA30RQ
Going to end my repair efforts on this tv and start on a new one that's hopefully the fixable
Bling23
Senior Member
Last Activity: 08-11-2014, 01:35 PM
Joined: 12-23-2012
Location: Tracy Ca
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Re: This guy has an RCA 42PA30RQ
Ok folks I emailed Damon who wrote a great ebook on plasma TVs. According to Damon, and I quote "if there is a short in the panel electrodes this can over stress the drive fets"Leave a comment:
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Re: This guy has an RCA 42PA30RQ
Thanks TomLeave a comment:
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Re: This guy has an RCA 42PA30RQ
I need schematics for this RCA 42PA30RQ!!! Does anyone have it or know where I can could find them?Leave a comment:
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Re: This guy has an RCA 42PA30RQ
I've replaced the Y-buffer..on my third of forth y-main and on my second x-main. But thanks for the info capkid. Here's what happened on this last attempt.
Test 1...Everything was connected on the set. No shorts or shorted components after methodically testing all the boards. If figured this time I would started the tv with everything connected on the tv minus the panel ribbons that connect to the X-main.
Results= with TV powered up, I hear the relay clicks on and off. The blue LED light is steady not blinking. However,...Leave a comment:
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Re: This guy has an RCA 42PA30RQ
The RJP30E2 arrived for the Y Main board. I tested them out of circuit and they are a go.
Time to install them on the Y main and see what happens.Leave a comment:
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Re: This guy has an RCA 42PA30RQ
Ok I finally recieved the RJH30E2 mosfets for the x-main. I tested them prior to soldering them and they tested good. I soldered them onto the x-main and tested them again in circuit and they tested good. Waiting on the RJP30E2 IGBT to arrive for the Y-main board.Leave a comment:
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Re: This guy has an RCA 42PA30RQ
Tw2005, I tend to agree with you. I honestly have checked very circuit on the boards for shorts and found none. I've checked and tested every diode,cap, resistor, transistor etc, and only find the mosfets blow. I honestly believe I do have a shorted panel causing the y and x main to short it's mosfets out. I also had my suspicion that the buzzing sound was coming from the panel and not the x-main.Leave a comment:
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Re: This guy has an RCA 42PA30RQ
Well alright Tom!!! I'll keep at it but the person I'm fixing it for is probably wondering why I haven't fixed it yet.Leave a comment:
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Re: This guy has an RCA 42PA30RQ
Well there are times when you have to set a limit on time wasted on a repair. I've wasted a lot of time and money on this Plasma Tv so It's going to the landfill. I'll salvage the good boards and sell them...Thanks to all who helped me with their thoughts and knowledge ..Leave a comment:
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Re: This guy has an RCA 42PA30RQ
Vs and va on the high is normal with power on 207vs va 54vLeave a comment:
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Re: This guy has an RCA 42PA30RQ
If your talking about the output volts from the PSU to the logic board, PSon is 4.5v with TV off..and VSON is 0.1. When I turn tv on, PSon is 0v and VSON is 3.3vLeave a comment:
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Re: This guy has an RCA 42PA30RQ
Tom does that appear to be right??Leave a comment:
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Re: This guy has an RCA 42PA30RQ
With the tv off PSon is at 4.5 volts...the VSON is at 0-0.1 v.. With the tv powered on, PSON is at 0.1 volts and VSON is at 3.25 voltsLeave a comment:
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Re: This guy has an RCA 42PA30RQ
When I turn off Vson is at 0.1 volts PSon is at 4.5 voltsLeave a comment:
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Re: This guy has an RCA 42PA30RQ
Edit..3.257 volts for VsonLeave a comment:
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Re: This guy has an RCA 42PA30RQ
0.1 voltsLeave a comment:
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Re: This guy has an RCA 42PA30RQ
On yes, I checked that..PS-on is 4.5v high on 0v low off.. VS-on 0v low off and 3.2 high onLeave a comment:
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Re: This guy has an RCA 42PA30RQ
Vince I tested all the boards before installing them. Problem is when I have all the boards installed, I get buzzing sound from x-main. Then I end up shorting out the mosfets on both the y and main. And I can't find those fets here or anything comparable. So I have to wait forever to get them shipped from main land China....if I replace the whole Y main,that will be my forth board And third for X-Main. Right now Im on holding pattern until the mosfets come inLeave a comment:
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Re: This guy has an RCA 42PA30RQ
Do you mean Vscan from Y-main ???Leave a comment:
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