Question about BenQ FP71G 17" LCD Monitor

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Benq lcd problem

Hello,
You appear to be quite the knowledge base, look forward to your input.

I am not able to get the sc5707 transistors locally. I have tried other
NPN transistors but display only works for one second then backlight goes out. If I source the correct sc5707's would this rectify the problem?

Regards

Marty

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  • 293 Answers

Hi...there,
Sure, it have to be the exact voltages. No less or more..

Posted on Dec 06, 2008

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I have a brand new shiny benq v2210 but no drivers or install disk. How do I install it. t thanks


I just went to the BenQ website and found the following:

Please visit the BenQ website at www.BenQ-eu.com/serviceandsupport/ to download the appropriate LCD Monitor drivers, alternatively you can also use the standard plug n play monitor driver in windows.

First I did Google search for BenQ
> www.benq.com
> clicked on support
> chose USA
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> first question: I don't have the driver for my LCD monitor, what should I do?

Also, I found the BenQ phone number (1. 866. 600.2367) that you can call during Monday to Friday business hours which are: 8:30 to 5:30 PST

I hope this will help resolve this for you

cmilton111
cmilton111@gmail.com
tp.gif

Feb 26, 2010 | Computers & Internet

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Benq lcd c5707 transistor issues


You need transistors with hfe greater than 300. They are harder to get and you should use the producter`s original transistors 2sa5707.

Oct 18, 2008 | BenQ FP71G 17" LCD Monitor

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Benq inverter board schemtic


Post me a picture of the board and I might be able to Help.Normally transistors 2Sc5707 are defective.
Samir.
viziks@gmail.com

Aug 20, 2008 | BenQ FP71G 17" LCD Monitor

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BenQ FP767 17" LCD Monitor Problem


IT seems you are not technically trained in electronics.In this case it's difficult to explain via this board,Best you find someone to fix it for you,you can try contacting Benq Support locally.
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Jun 07, 2008 | BenQ FP767 17" LCD Monitor

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check transistors Q739,740,759,760.These transistors are near the Yellow inverter transformers.Resolder these transformers and check/ replace above transistors.
Please rate this solution.
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Jun 03, 2008 | BenQ FP737S-D 17" LCD Monitor

1 Answer

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You have a failed inverter circuit. This is a very common fault with BenQ and other LCD monitors. I have seen more FP737 and FP731's and all their cousins in the last 2 years then I care to count.

You will be best to take it to a TV technician and have them do the repair. There are ways to fix it yourself, but the chances of success are not great without a decent amount of electronic knowledge.

Call several places and get approx quotes based on the inverter fault. A lot of TV techs will not work on LCD monitors and is another good reason to call around first.

One final thing, check the manufacture date on the back of the monitor, these normally come with a 3 year warranty and it will be either expired now, or very close to it. If it is still under warranty, then contact BenQ near you to facilitate the repairs.

BenQ support webpage.

Apr 15, 2008 | BenQ FP731 17" LCD Monitor

1 Answer

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Hello Guys!
The problems you face may relate to the key switch panel,one or more of the key seems to be leaky.Clean all switches with switch cleaning fluid like WD40 or most reliable solution is replacing all these switches.
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Samir

Apr 09, 2008 | BenQ FP737S-D 17" LCD Monitor

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Resolder the power transistors on inverter board and also check them.If display is not there at all some of this 4 transistors C5707 should be defective.Check associated fuse and Fet which drives the transistor.

Also check with Benq ,Normally offers three year warranty.

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Connect it to another device, if you get the same result the backlight is bad! These can be replaced, but can be costly!

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