Hi,is it normal that the large processor on the TV mainboard has different temperatures ? it is a square the lower part 48c, left side 53c, right side 80c, and top 62c seen from below
question about tv main board processor temperatures
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Re: question about tv main board
thank you for the answer diif but is it normal with different values on the same chip,I try to find the short on that TV and I happen to put a finger on the mainboard cooling protection in the middle and felt that it was a little warmer I pulled it off and found that value. I will try with your instruction but what is the purpose of putting the tape on the area you want to measure? do that not decrease the value?Comment
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Re: question about tv main board processor temperatures
As I have already written it is highly unlikely to have a difference of 30c on a processor or anything small. It's measuring inaccurately due to the reflective surface and also its far too close.Comment
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Re: question about tv main board processor temperatures
Aha ok I have misunderstood your explanation, can you say how far from the chip is the right distance? I will measure with TM-902c to see the difference even if the feeling of the fingers is not so badComment
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by Dani_2024Hi and thanks in advance for any input you might provide!
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by ygorsanHi everyone,
Iām looking for help with a persistent issue on an LG TV model 55NANO77SRA, which uses the main board EBU66792103 (also used in LG UQ80 and NANO75/NANO80 series).
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- I removed the physical button board (the entire panel with power and volume buttons) and also disconnected the flat cable (CN202) from the main board.
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by jb_BakHey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
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by JDCONN 100012588
Issue: No Power, Then Rebooting After Main Board Change
Short answer: replace main board and power board
Technical answer: replace main board and Q306 & Q307 on power board.
Long answer:
TV wouldn't turn on. Power switch was fine which means the main board isn't processing the power on signal. Replaced main board. TV turns on now but randomly reboots. Bad main board? EEPROM? Tried to pull main board and got a shock touching the corner of the board. That's weird. C334 (450V 10uf) capacitor is still holding a high charge.... -
by cheeky2I suppose the real question is whether the existing pinouts from ether a 17IPS71 psu are cross compatible with a 17IPS12 psu? If they are then the exchange of the main boards should have no issues providing the screen is compatible with both main boards. Obviously you can change the screen configurations easily enough (providing you have the correct files) for the main board. Why may you ask would I do this? Well a lot of the smart features are no longer working on a Hitachi 48HBT62U main board I wish to give it a new lease of life!
Obviously the same LVDS connector for the screen connection... - Loading...
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