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.
Stude
Member
Last Activity: 12-12-2013, 06:04 AM
Joined: 11-08-2013
Location: Gouverneur, NY
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Re: RCA 42PA30RQ plasma tv problem
Update:
Received second Y main and Y buffer from Retech and installed. Checked the transistors and diodes on the Y main before installing. No shorts found. X Main had been checked, no shorts found. Verified all of the plugs and ribbons are seated properly and locked in place. All screws installed in the panels.
Watched the screen as I turned it on the first time. First click on- There were some lines that flashed blue for a second and then two more clicks- nothing. Seems I am back at sqaure one. Three clicks of the relay and no worky....Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
I was finally able to contact Retech Tv and explained the situation, and they are sending another Y Main and Y buffer. I metioned replacing all 3 boards to be safe, but I guess it is their call as the X Main tested maybe ok.
The guy metioned that the panels can short out even though there may not be any visible cracks, although he stated it is on seldom occasion that they see a bad one.
So, I will see what happens, and let you know how it ends up. Hopefully good, because if it doesn't work this time, it is probably headed to the transfer...Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
So regardless of tests, I should request all 3 boards again? Y Main, Y buffer and X Main......Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
I found some further testing info for diodes and transistors on youtube, so I need to maybe clarify what I am seeing. I am testing with my meter in diode test mode.
I am familiar with diodes as there are several applications of such in the primarily mechanical field in which I have worked. Basically, continuity one way, not the other with an ohm meter.
Transistors, not so much... as I understand it, the transisitor would be basically a double diode, with a common leg?
With that said, my old Y main and my old X main showed...Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
I performed the test as instructed by the above linked thread. I found several bad diodes and transistors on both original boards. I checked my replacement boards and the X main tests ok, but there are a couple transistors on the Y main that show continuity, like 1-1.5 ohms.
So looks like I need another Y main, eh?Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
Voltages are as follows...
PS connector to Y main:
VA- 55, then slowly to 0
VS- 206, then slowly to 0
15V- 15 steady
Connector Y main to X main:
VS-206, then slowly to 0
VE- 99, steady
VDD- 5 steady
Boards came from Retech tv in TN.
This has a single y buffer, as opposed to an upper and lower. I switched back to the original Y buffer board and no difference.
I tested the replacement Y buffer, per the video linked on this forum somewhere, and it tested ok, same as the ...Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
Well, I have replaced the x main, y main and y buffer boards, and although it only clicks on once, stll has no picture.
Any suggestions?Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
I looked on the RCA website and they have nothing for my model that I found.
So, it appears that I should try to find the exact RCA replacements rather than an updated Samsung board that requires a firmaware update?
I wouldn't want repeated failures... especially since the original only lasted 18 months or so....Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
Ok, so I might have found out how to go about downloading the info and installing in the tv. Would I be correct in assuming that I would install the firmware from Samsung on my RCA TV? Most of the boards are Samsung, so I assume that the complete tv is a rebadged Samsung... or is it not?
...
Leave a comment:
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Re: RCA 42PA30RQ plasma tv problem
After looking at shopjimmy.com, I noticed that one main board requires a firmware update.
-How do I go about that?
-Where does one get the updated "firmware"?
-Does this really stop failures as they are suggesting?Leave a comment:
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RCA 42PA30RQ plasma tv problem
I have been reading all the threads here pertaining to this model tv, and have done some probing in the tv. Basically I would like you opinions to verify which boards I may need to repair this. I have ordered a Panasonic to replace it but would like to fix this set since the parts seem to be relatively inexpensive.
It was working fine until one evening my wife turned it on by the manual button and she said the screen lit for a moment and went blank. To my knowledge, there was no sound either, but I can't verify the sound because I am not sure what input it is on since the screen... -
Re: New Members - please post your introductions here
Hello Badcaps members. I am am from northern NY state, not to be confused with NYC... two totally worlds.
I have "turned wrenches" for most of my life and therefore like to fix stuff rather than take it to the landfill. Upon researching information regarding an RCA tv that went south on me recently (figuratively, not literally, although it is getting that time of year I personally would to be in the south) I stumbled upon this forum. So here I am. I generally put my skills to good use restoring classic vehicles,...Leave a comment:
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