Question about LG 32LC7D Television
Well my problems are just like others read mine below yours.
Here is what I found out and if anyone inverter fails this is the reason.
Now my warranty was up for my LG 32LC7D flat panel TV, so with my screen going black, I had nothing to loose so I opened the TV and took the back off. I found that when the screen goes black the screen and back was extremely HOT so I tried cooling it off. I took the back off and kept off for two days, the TV did not freeze nor did the screen go black either, it was on even when I was not watching it just for test sake some times when I could feel the heat I put my house fan on pointed at the back of the TV and until now, no more black screen, so I went to the audio store and bought a 110V amplifier extractor FAN cut a ROUND hole in the plastic back panel of the TV over the transistor heat sinks and bolt it up. I am no technician so I did not connect the fan to the TV circuit board but instead put a plug on the wire and plug it into my cable box power plug,
So whenever I turn the cable box on the fan would come on with the TV. I Put the back on and now the screen is cooler the remote responds, the TV have not froze for 4 days now and the TV will work until I fall asleep and get up to turn it off like normal . The fan makes a little sound but not much more than a computer if you have a good technician you can have him install 2 small 12V computer fans and find some where on the circuit board to connect then so they work with the TV power supply. I sure hope my problems are over and this will help others. Try to keep the TV away from close quarters and hot walls .This TV runs hotter than a ctr TV.
As for LG the TV needs a proper cooling system + small cooling fans and more cooling ports on the back of the TV ,cause there is only 1 small vent about 2 X 3 inches below the heat sink and heat does not go down everybody knows heat goes up. The vents at the top are not enough to cool this TV without the aid of extractor fans. LG should test TVs in a hot room to simulate hot homes in summer times to see the defects. Shame on LG to let a simple costumer find this out. My house is not hot, I live at least 1600 feet above sea level in the rural of Jamaica and it rains every day so it is not a hot house problem. Heat dissipation is a real killer for this TV and any inverter failure. Talk to your technician and try my theory,
If your warranty is up the he only thing you have to loose is your TV.
You case a little difficult. you not a technicion. hard to tell me about that connect the cooler fan to tv inside circuit . if you understand that transistor like # kia7812p1.that "s has 1 input . 1 output & 1 ground connection. if take a cooler fan " + "wire connect to that output of transistor & "-- " wire connect to tv dc ground. that " s be cooler fan working when tv on. hopefully could help you. christopher. but that connection i never did it before. good luck!
Posted on Apr 29, 2010
MOST LG PROBLEMS HAVE NOTHING TO DO WITH THE INVERTER BOARD AND THE INVERTER BOARD WILL NOT CAUSE THE PICTURE T FREEZE. THE 2 MOST COMMON PROBLEMS ARE THE POWER SUPPLY BOARD ( DEFECTIVE CAPACITORS) AND THE MAIN TOTAL ASSY. THE DESCRIBED PROBLEM ABOVE OF PUTTING A FAN ON THE UNIT IS A TEMPORARY FIX. REPLACE THE MAIN TOTAL ASSY.
Posted on Jul 27, 2009
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