On a flat screen tv model number nx-552 the red light in front comes on but the tv will not light up, no sound acts as thoug it is not on

5 Related Answers

Anonymous

129 Answers
Posted on Mar 29, 2008

SOURCE: tv has sound but picture is black

good day.
The crt circuit of the unit might be loose or the the parts inside the board is loose. Have it hecked by a technician first. Minor parts inside might caused the problem.

Response is highly appreciated.

chris

Anonymous

4 Answers
Posted on Jul 24, 2008

SOURCE: Akai LCT2716 Flat Panel TV

I bought one of these tv's at a thrift store and it had the same problem, orange light blinking and static sound coming out of the speakers, no video at all.
The problem was the power supply board, this power supply has multiple outputs that feed the circuitry, 12V, 24v, 5V.
There was nine electrolitic capacitors I had to replace to fix it, all of them were bulged they are easy to spot, I measure one of them that was supposed to measure 1000uF but measured only 65uF. you can buy these from digikey for about 50 cents each, they need to be rated at 105 deg c and the profile has to be below the heat sink otherwise they will hit the top of the heat sink, the spacing between the leads has to be 5mm so they fit in the pcb. I replaced 3 1000uF/25v, 3 470uF/16v and 3 1000uF/16v and that fixed the problem, I bought this tv broken for 100 bucks fixed it with 6 bucks.
Good luck, don't perform repair if you are not familiar with dangerous AC voltage inside the TV.

Anonymous

30 Answers
Posted on Oct 16, 2008

SOURCE: LG LCD Flat screen 32 screen blank red light blinking cable on

Bad caps in the power supply. Replace all bad cap or replace Power Supply Module. If you choose to try and fix it yourself yourself will need a ESR Meter to check the caps in circuit. Let me know if this helps.