Question about Microtek 211SD 21" LCD Monitor

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Microtek 211SD Need Internal Power Supply part number and source. Also anyone have voltage checks for this unit. Had two of these go out within a week of each other - a week after the warranty ended. Thanks

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  • Anonymous Oct 19, 2008

    I also have one of these monitors with defective capacitors. I need to

    find a replacement power supply.

  • Anonymous Nov 06, 2008

    The integraded power supply is bad. i took it apart and some transistors are burnt.
    I am looking for a new part to replace it.
    Anyone knows contact me.

  • equiptech Feb 21, 2009

    same here

    part Number looks like 4143031300

  • Bubbix Apr 06, 2009

    Same here, anyone find a solution?



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SOURCE: Which is right power cord

if you have the power supply it should say:
les/hitron its a 15-15.5volts 1.25/1.0 amps center of post is positive outer is negative. or call 310-687-5800 for microtek customer service for more information

Posted on Nov 25, 2010


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Hi Gwendolyn,

First of all thank you for posting your question here at Fixya.
I'm assuming here that you're TV is a Vizio L32 HDTV.
My initial advice is to ensure that the AC source(outlet) is live. Please plug the unit to a known working outlet, if you are using a surge protector, directly plug the power cord of the TV to the outlet to confirm that the AC source is not the issue here.
If you've confirmed that the AC source is not the problem, then the fault is inside the TV and most likely the power supply. Most of the TV with a dead set symptoms that I've encountered is a power supply issue but of course needs to be confirm.

If your unit is not under warranty period (if so, avail it because the manufacturer will fix it for free, opening the rear cover will void the warranty), open the back cover, check the internal fuse of the power supply board, this is near where the AC power cord's directly connected. Check its continuity using the multimeter/ohmmeter, if you found it open, replaced it with a new same current rating that is printed on its body itself. Sometimes internal fuse fail due to voltage surge/flactuation, aging, etc, replacing with new one resolve the issue, however if the fuse blow again, this is an indication of more serious problem on the power supply board, it needs to replaced the entire board.
If the fuse is intact, you have to measure the output voltage of it through connector J1 (pin 9,10,11). You should be getting 5 Volts. If there's no voltage at these pin, you're power supply board is dead, replaced the entire board. If the 5 volts is present, replaced the main board.
I've provided you a links for the power supply board and mainboard below.
Vizio L32 Power supply board

Vizio L32 Mainboard

Let me know if you need further assistance.

Rating and feedback are highly appreciated!

Hope I helped you.
Good luck and take care!
Have a nice day!
Kind Regards,


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This device, unlike most guitar pedals, requires a 12 volt power supply. Are you sure yours is the original? If the supply is low, the internal electronics will show clipping. Make sure you are using the original power supply and if so, check the voltage it is producing.

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Does the unit need an adaptor or just an AC power cord? If it has an input jack similar to other DC input devices that use a 'wall wart' type with a large plug (actually a primitive power supply), you need to determine what voltage and current it needs. 

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Which is right power cord

if you have the power supply it should say:
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Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
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