Memorex MVUC821 8 in. Under Cabinet TV Logo

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Posted on Nov 18, 2009

How can i fix my memorex mvuc821 under cabinet tv ? there is a a frozen screen poping up saying to starting using my tv guardian and to reset it but i get no there's responds ..,also telling me that the display will show 5 times//

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  • Posted on Oct 21, 2010
Anonymous
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Call memorex at 1-877-363-6673 and tell them you need ic location u305 in main pcba this is whats causing the problem and they will send you one

  • Anonymous Oct 13, 2011

    which IC is it? Memorex will not support anymore.

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1answer

My memorex under cabinet tv model MVUC821 won't turn on and reads INITIAL in the display screen

Ok so the Tv is worth from the link below about $85 bucks
you might just as well replace it at this point because I think the power supply is gone bad https://www.ebay.com/i/282679660314?chn=ps
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Manual for mvuc821

Hi
Check the below link for the manual you are serching. There is no need for entering the email id . Just enter the number and click download.
Manual
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I have a Memorex MVUC821 8" TFT DVD Player. Upon power on, the red standby light turn green. The unit checks to see if a dvd is the player and then cycles the dvd player since not disk is present...

Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board.

I do not think it needs replacement, rather some defective capacitors are causing this issue.
Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Compliments of the season.
0helpful
1answer

Memorex MVUC821 TV/DVD. Everything works except the TV.

Just bought the Memorex MVUC821 & the DVD Player will not open using the remote or front panel button!!!
1helpful
1answer

Screen flashes intermittent and the display says "initial". Buttons on unit are not working. Any ideas?

you need a new ic found on main board #305 call memorex and they will send you one 1-877-363-6673 option #2 tell them what it is doing and they will send part to you and you put it in or take to shop to put in if you dont know electronics
1helpful
1answer

I have Dish sattelite and it won't work with memorex under cabinet. They said I need a cable box in between the dish receiver and the tv. Why is this?

You need a receiver for each TV you want to receive the reception on. Your dish receives the broadcast signal from the network and your receiver decodes and recodes the signal to view on your TV. The companies have created their own proprietary equipment to accomplish this to keep anyone and everyone from simply installing their own dish and receiving all of their broadcast channels for FREE. In the olden days when satellite and cable TV was new, that is exactly what people did. Remember those gigantic dishes some people installed in their yards? They would intercept the signals coming from the satellites and hook up directly to their TVs. The companies got smart and started to scramble the signals going up to the satellites to make these home owner dishes obsolete. Because the signals are scrambled, you now need a receiver to un-scramble the signal. I hope this helps and good luck. Please remember to vote d368a18.jpg if you found this helpful. Thanks.
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