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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Power saving mode

l connect monitor with any signal source

Mar 01, 2015 | Microtek 211SD 21" LCD Monitor

2 Answers

I have lost the original power supply for my dell 1701fp monitor. I have a power supply that I think may work as a substitute until I can replace the original. I need to know, what the acceptable voltage...

What ever you use, it must be REGULATED power supply that will maintain 14vdc output, rating at 3A. These regulated power supply can easily maintain the output voltage within +/- 5% with input AC voltage range from 100~240vac.
Linear regulator power supply may not work since it has slow response time to regulate the voltage.

Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors:
Learn about bad caps:
Capacitors kit: he can make you a set of caps.
Or, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.

Jan 06, 2011 | Dell UltraSharp 1701FP 17" LCD Monitor

1 Answer

Picture and video is not clear

Hi Scandle201
Yot have done every thing right on your side. You will unfortunetly have to take the monitor back to the repair shop. Ask them to test it at your resolution settings of your home desktop and play some video's and open some pictures on there test system.


Dec 15, 2008 | Microtek 211SD 21" LCD Monitor

1 Answer

MicroTek LCD Monitor

Sounds like it might be getting too hot and/or going bad. Not sure how to diagnose this without seeing it myself. That is the best that I can do. Your video card could be going bad. Try another video card on that monitor. This will be the only way to decide if it is the card or monitor.

May 29, 2008 | Microtek 211SD 21" LCD Monitor

1 Answer

Dell 20

Dear Tirat

Hello Dave, well unfortunately your problem here is not going to be all that easy to resolve as components that burn out are not always visable to the naked eye. However, there are logical methods of approach that you can undertake to possibly find out and recify what has caused this fault. Let us start by looking at the supply signal (DC current) that is received into the monitor unit. By using instruments such as multimeters and oscilloscopes on components at power supply source, you may be able to work out ifany of the crital parts have broken down. For instance, Capacitors are rated on the farad scale or microfarad in the case of small DC circuits carrying low voltage (uF). So it may be worth checking service sheets in order to find out what the read ratings and load ratings are, then compare them to the read ratings you have.....If they dont match, then you have found the fault at supply source, and the same methods can be applied throughout the entire DC circuit. It is time consuming, but it will make for a good project, and if you find the fault, then components are fairly cheap to acquire from either or maplin electronics.

There is one other possible reason for the smoke and no burning marks, an that is tha you have only concentrated on the main PCB, so i recommend looking at the back-light and LCD Unit itself. Both of these components carry large enough voltages for smoke to be produced, and the burn/ scortch marks are not so evident unless you ae specifically looking for them here. What you will be ooking for, is a small strip-ligh or florescent type tube with either smooth soft white or black wires attached to it, the insulation of this wire is smoother and largely differs from that of other wiring within the unit, so this component will stand out to you.....Once you find the tubing, if it has been burnt, or had a fire the tubing will have been broken, and you will need to replace this and first find out what caused the fault to happen in the first place....WARNING....LCD SREENS AND CERAIN COMPONENTS CARRY HIGH CURRENT AND VOLTAGES THAT MAY BE HARMFUL IF YOU COME INTO CONTACT WITH THEM, SO BE SURE TO POWER DOWN, AND PROPERLY DISCHARGE THE UNIT FOR 24HRS MINIMUM BEFORE UNDERTAKING ANY DIRECT CONTACT WITH COMPONENTS. IF IN DOUBT, CONTACT AN APPROVED SERVICE ENGINEER.

So as said, your best bet is a logical systematic approach, deal wth the supply source first, then trace back to the display in order to find your fault. The other main reason for this is that to replace a power supply and a few components at supply source within the monitor is cheaper than shelling out for a new screen and backlight. So always start with the cheapest first.

Lastly, your other indicator that you may have either blown LCD or backlight is evident if the power LED (green light on screen) is on, but you get no picture, however this can vary from model to model, as the internal circuitry is arranged differently on other monitors, but its still well worth a look.

I hope that this has proved useful for you, and if you do need further assistance, then please do not hesitate to mail me back as so i can assist you further, i will b here pretty much all the time, so just feel free to ask me or comment, nd i will endeavour to respond

yours sincerely


Apr 11, 2008 | Dell 2000FP 20.1" LCD Monitor

3 Answers

Monitor makes popping noise when power is on.

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.
Good Luck!

Feb 19, 2008 | Microtek 211SD 21" LCD Monitor

1 Answer

Monitor won't power on

PF747 has internal switch-mode power supply. Old LCD monitors have external low voltage (12VDC) power supply which can easily be replaced by any brand provided the voltage and current is the same. On your monitor, th epower supply module is built inside the unit. When you say that the LED is flashing, this means two things, 1. The power supply is attempting to start, but the load (or current) is above its limit and it automatically switch off, then tries to start again and so on. This can be a problem with the load (minitor intelligence or the mainboard, hv supply for the flourecent back supply) 2. It can be that the power supply module is defective In any any case, the only way to find out is to disconnect the load from the internal power supply (the monitor have to be opened), and measure the voltage at the terminal. In many devices the output will be 12 volts and in some cases there will be also 5volds supply. If there are correct voltage present, then the supply is OK and most probably the mainboard or the HV supply is defective. If there are no voltage present, then the power supply module is defective. You can either fix this module, replace with exact new module or if you have a spare external powersupply, you can use this to provide the power to the internal circuit. The last option is recommended only if you have experience in electronics repair. If you cannot do the repair yourself and will cost USD200, buy a new monitor.

May 18, 2007 | BenQ FP747 (Beige) 17" LCD Monitor

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