Having problems with your Samsung 153b-sliver (Silver) 15 in. Flat Panel LCD Monitor ?

I have a samsung 15 inch LCD TV. When I turn the

\015 I have a samsung 15 inch LCD TV. When I turn the TV on the picture and sound come on. After a few seconds the picture goes off, the screen is black but the sound remains on.\015

Answers :

Kcs36dd, Lcd TV's also have, just like LCD monitors, an AC to DC voltage power supply. It is called a "switch-mode-power-supply" and generates the DC voltages required for all the other important electronic circuits inside the unit. 98% of all 14" to 22' lcd panels have backlighting provided by "cold-cathode-fluorescent-lamps" (CCFL) that produce WHITE LIGHT so you can see all the pretty colors that the glass LCD PANEL produces on the screen. The INVERTER circuit requires 12vdc to 20vdc from the SMPS to convert into 500 to 1000v ac to light-up the CCFL's. IF the SMPS detects a FAULT CONDITION with itself or the INVERTER it will go into what is known as FULL or PARTIAL SHUTDOWN MODE to try and save itself from a catastrophic, nonrecoverable failure. e.g. sparks, smoke, fire. lmistyrel on aim.com I could give you more assistance if you had provided following informatiom.
\015\0121. How old is the unit? 2, Approximate total "ON" hours unit has? 3.Has unit failed within the WARRANTY period? 4. Will SAMSUNG do a cash+old unit swapout because of PREMATURE FAILURE? 4. Do you know enough to do a unit TEARDOWN and inspection to possibly determine ROOT CAUSE of SMPS/INVERTER failure? 5. Can you handle a soldering iron and solder to make DIY repairs to unit. 6. Since your unit is just a little more complex than a LCD MONITOR, have toy viewed on YOUTUBE short video clips of "LCD monitor disassembly" or "LCD monitor repair" for the most common cause of BLACK screen complaints? If further assistance is required do additional post to original. 12fixlouie aka louie12fix on fixya
Repair Help & Product Troubleshooting for Samsung 153b-sliver (Silver) 15 in. Flat Panel LCD Monitor

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