Question about LG RZ-20LA70 20 in. LCD Television
Used TV one night and turned off with remote. Next morning I have no sound or picture. Tried different input modes / setup / volume control to max still the same. Cannot even get the menu on the screen. Only thing working is the on / off red/green indicicator responding to remote control and push button on unit. Checked output voltages from switchmode supply to top board housing reciever and what looks like the main processor. 24v, 30v and 15v outputs all ok. Have not proceeded any further. Suspect that no sound is due to no channels are programmed as we do not use the internal tuner.
If you can help it would be much appreciated.
I have sale Pb as
Can you send me service manual Spinnumber at Hotmail.com
Posted on Sep 06, 2008
Best send repair manual.
I have pics to show / identify problem but I cannot attach to my reply. Parts defective are: 4532M x 2 (UC2 & 3), diode next to diode RC22 & cap C35 and IC6 (cannot see part number). Board number is YPNL-M007B r1.0, also recognized L.G. Phillips part number: LC230W01-A2
My hands are not as steady as years ago to do surface mount solerering but my wife can as she has done this before being electronic equipment assembler.
As stated before I need to find source of what I suspect is short that had blown these components.
I bet a replacement board is more expencive than a new LCD TV!, but I want to resolve this prob and maybe help others...LG too.
Thanks Heaps Jaime867!
Posted on May 25, 2008
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