Question about Memorex MLT2022 20 in. EDTV-Ready LCD Television
When I hook up the unit to my PC and turn both on I see the Windows XP start up and them the screen goes black and "not supported" shows. How do I get it to function properly?
I will be happy to help. 88% of LCD tv problems are with the backlight, the symptoms you described indicate a probable inverter malfunction. Lets do a simple test to check the functionality.
Posted on Jan 26, 2009
The poroblem can either be the 12~18vdc power supply section is not supplying the power to the backlight inverter board or the inverter board went out, you need to check voltage on the power supply, also look to see if you see any caps with leaking/bulging top.
See example of failed TV and monitors here:
Posted on Jun 13, 2010
Check the power supply module for bad DC filter caps first, then check the backlight inverter board for shorts.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Capacitors kit: http://lcdalternatives.auctivacommerce.com/
Please post back what you find.
Posted on Jul 29, 2010
SOURCE: I turned on my tv
LCD sets (other than those very new) use fluorescent back lighting to produce the picture.
Those lights require high voltage to ionize them so the problem could be either the tubes themselves or the inverter that produces the high voltage is failing.
Anyone with some degree of manual finesse and possessed of logic can cure this problem but it may be difficult to identify the failed part accurately meaning that if you 'shotgun' the problem, you would need to replace both the tube(s) and the inverter board.
The latter is in most sets as a separate assembly which derives its operating voltage from the main power supply and will be obviously attached to the fluorescent tube(s).
The board will have to found from the manufacturer or a company that disassembles scrapped sets.
Check with the site below for availability:
Search on your set's model number and the term 'inverter.'
The tube(s) can be bought from several US suppliers.
Posted on Oct 17, 2010
I am having the same problem... never happened before and I've had the TV for about 2 years. I tried unplugging it for about an hour and plugging back in, but not working. Will try it overnight and see what happens.... *sigh*
Posted on Nov 15, 2010
SOURCE: The LCD Memorex model MLT3221
If the screen has gone off but the sound still works then its most likely the inverter has gone bad. Check for open fuses or leaking and expanded capacitors.
Posted on Mar 22, 2011
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