Parental codes for memorex mlt3221

SOURCE: can i get a screen for memorex model# mlt3221

Even If you could, and you can't it would be directly threw memorex. You can go to there website, look for the support section and email them asking. Chances are if they will sell you JUST a screen it will be pretty expensive and as far as installing it that would be an entirely different situation. Sorry your screen broke and this probably isnt the news you want to hear.

Thanks for stopping by Fixya!

Bud Martin

• 11361 Answers
• Posted on Jul 29, 2010

SOURCE: Memorex mlt3221. white screen, no sound, no function.

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:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/

Please post back what you find.

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.

SOURCE: No Power on Memorex MLT3221

Hi,

I am sorry to hear regarding the trouble.

This is a common problem on all these sets after few years. We do see such problems on most of the days in our shop.If there is no power, it is highly suggestive of faulty power supply board and needs repair / replacement. If you have electronics repair experience, you could open the TV and pull out the board. You need to have a capacitor tester to check the continuity of these caps.Most of these caps are seen to be bulged / swelled or leaked and could be easily visible. You need to get the original caps from either radio shack or fry's . These caps could be available from any shop of repute.Do not buy it from ebay as most of the caps sold are not original and would cause the same problem even after few hours.Unless you need to replace the board.

You could get the board from :

http://www.shopjimmy.com/memorex-899-ab0-ipos150h-power-supply-unit.htm

If you are looking for a tech, the estimate would be around $150 - $175.

Any TV repair shop that has been in business for a few years would do.You can also give them the info (link) i gave you to show them you know the price of the part.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

SOURCE: i have a memorex mlt3221 and the screen just went balck

Look inside at the power supply board:

This sounds like a very common issue.

If set is hard to turn on (takes several tries)but will eventually turn on hereis what my guess would be.

Every set has a standby power supplythat is running 7/24 if the set is plugged in and it supplies voltage to theremote circuit that turn on the main power supply for the tv and hence turn theset on.

This is an area where companies cut corners by using lower rated voltage caps.By this I mean Standby usually provides under 10 volts to trigger the seton----what they do is use filter caps rated at say 10 volts max in a circuitwith 9 volts (example)=with the standby on all the time the filter caps(electrolytic caps) dry out and fail.

The problem usually begins where you have to turn set on or or two times andgradually gets worse--takes longer and more tries to get it to come up.

Once on it will stay on until turned off for a period of time.

The caps will begin to work better (regain some of thecapacitance) as they get hot--hence one it is on it will seem ok.

The beauty of this problem is most of themhappen when set is a year or two old (no warranty) and all you have to do islook at the top to locate bad ones.

They are generally black or blue and round and vary in --they have twoconnections each--a + for positive and a - for negative--not unlike a batterywhich in a way they are. The + and - are marked on top and bottom of most boards.

They are easy to replace and not expensive parts.

The tops are silverand metal looking with creases on top and if bad they will be puffed up ontop---tops must be perfectly flat with no brown material leaking top or bottom.

If this is your problem once you id them (make a drawing) you can begin.

Here is the critical part---on each cap is also marked the value like 220uf 10vdc---220 micro farad at 10 volts maximum.

If you find for example 6 puffed up and all are 10 vdc replace them with thesame value capacitance (like the 220 uf) but go up to at least in this case(from 10 volts) to a 16 or higher rated voltage cap.

The only issue is when you go up in voltage rated value the cap is larger sosometimes there is an issue of physical space for the replacement on the boardto fit them in.

The reason they cheapen these sets in this way is if 10 caps and you make25,000 sets there is a considerable savings in parts cost.

They do not care as long as it lasts past the usual one year parts warranty.

I have taken the time to be long winded because this really sounds like it maybe the problem you have.

See attached photo of a typical cap and if you have questions or need advicelet me know.