Westinghouse LTV-32w1 32 in. HD-Ready LCD Television Logo
Anonymous Posted on Sep 10, 2007

Repair tip I'm working on a LG RM20LA70. When powered on there is no picture or sound exepted for a sceaching coming from the speakers.As it warms up it will slowly start working. tried heating it and freezing it wit no success. Has any one encounted thi problem.(lcd tv)

  • Anonymous Sep 11, 2007

    Thank you I will check the voltages but the menu is fine except for the screaching sound coming from the speakers.

  • Anonymous Jan 09, 2008

    This model is a lcd panel

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  • Posted on Mar 15, 2008
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I kinda agree to start checking voltages on the power supply, but the TV i have it is hard to find parts let alone the schematics the make is westinghouse the model is LTV-27W2.did i mention it is only 2 years old

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  • Posted on Jan 08, 2008
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When u start ur tv when its cold, u must test all ur voltage going to the crt board ,, u should see if there is a voltage drop,on G1 , G2 OR HEAT OR 12 VOLT LINE..IF U GOT A VOLTAGE DROP ,FOLLOW BACK THE PROBLE,SEE WHAT CIRCUIT PROVIDE THAT VOLTAGE TO IT,,,GOOD LUCK BUDDY,BYE

  • Anonymous Jan 09, 2008

    ok,well i didn"y knew its a lcd panel... anyways if its alcd tv ,the troubleshoting wil be different that the first idea i give ok, sorry for that error.. -/ for lcd tv dead-- did u check output source from ur power supply to ur mb,5v,12,24v, one of those 3 voltage,?,,if voltage ok,check ur see if ur 24v going to ur inverter board ok,,, this sound like a defective cap ,,,

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  • Posted on Sep 12, 2007
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I encounter that symtoms! maybe you have defective starting capacitor! 150uf 180v or 200v near at the flyback!.

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  • Posted on Sep 12, 2007
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There is a bad cap in the ps ck ESR..john

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  • Posted on Sep 11, 2007
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I have not encountered this problem but I can tell you what is happening. The switching power supply transformer might be arching. I would get a scematic for this set and begin to look at the voltages on the Power supply for proper functionality.

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