Question about BenQ T701 TFT 17" LCD Monitor

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I have a benq t701 with power problems

I have a benq t701 there is power to the transformer circuits but there is no power led on and there sounds like a chirp every second from somewhere near the middle bottom of the power board

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Faulty power board... possibly caused by blown capacitors..

Posted on Jul 03, 2009

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Posted on Jan 02, 2017

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1 Answer

After start monitors works 15-30 sec, and write Nonpreset Mode! and torn off. Green led lamps light normal.


Replace bad electrolytic caps on power supply module,or just replace power supply, that should fix your problem.

Jan 17, 2011 | BenQ T701 TFT 17" LCD Monitor

1 Answer

When I plug in the monitor the green power LED comes on for approx 2 seconds then goes out. If I unplug the monitor for at least 10 seconds it will repeat the light on for 2 sec. If I unplug it for less...


It can be power supply, backlight inverter, or bad lamp assembly. You need to open it up and do in-depthtroubleshooting. Please read below and look at pictures, learn ablut bad caps, how LCD monitor works.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://en.wikipedia.org/wiki/Capacitor_plague
Learn about bad caps: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Nov 25, 2010 | BenQ T701 TFT 17" LCD Monitor

1 Answer

I brought my benq t701 to a repair shop to due blackout screen. But due to lack of parts, it was not repaired but all 6 transistors were removed from the PCB. Please show me where these transistors were...


go to esservice.com and get the manual from there will be easier as the transistors are directional i believe they are 2sc5707s from memory but you will need to check the transformers and the 2 filter caps on either side of them as if they are faulty will blow transistors.

Dec 30, 2009 | BenQ T701 TFT 17" LCD Monitor

1 Answer

Benq FP92G Display couple of seconds then blank. LED still green.


budged electrolytic capacitor nearby high voltage transformer. 220microcarad/25Volts. apply fresh solder and re-connect lamps.

Jun 01, 2009 | BenQ FP92G+S (Black,Sylver) (Silver,...

2 Answers

Benq screen shuts down when pc is plugged in


If it's a 71g and not 71g+ resolder transistors 2sc5707 on invertor board along with grey condensers and inverter transformer.This should solve the problem if it was display shutting off with power led remaining on.Otherwise check power section.

Feb 24, 2008 | BenQ FP71G 17" LCD Monitor

2 Answers

Monitor


Hi Abadir, It really sounds like your back light has bit the dust. I can't always see stuff on the LCDwhen the back light is out. Check in with LCDrepair.net for parts, and repair of your monitor. I truly hope this helps. Good luck.

Oct 09, 2007 | BenQ T701 TFT 17" LCD Monitor

1 Answer

Power ok but No Display


see this one
http://www.fixya.com/support/t155971-benq_t701_lcd_monitor

Sep 16, 2007 | BenQ T701 TFT 17" LCD Monitor

1 Answer

Benq t701 flat screen no display


see this post
http://www.fixya.com/support/t155971-benq_t701_lcd_monitor

Apr 15, 2007 | BenQ T701 TFT 17" LCD Monitor

1 Answer

Tv went dead while viewing, will not power back up


You have a short somewhere in the load for the power supply. Probably the horizontal output transistor and the flyback transformer. You need to have it checked out by a tech. You may want to get an estimate. Stargazer

Mar 11, 2007 | RCA F36715 36" TV

1 Answer

No Pic or Sound


It sounds like a defect in the horizontal drive or HI voltage circuit. Could be the Horizontal output transistor , and /or the flyback transformer, a short in the scan derived power supply on the output of the flyback transformer. If your not aware of the HI VOLTAGE issues and have soldering experience you should seek a pro to assist ya in this repair. If you do have the experience, get a schematic and start with the hi voltage circuit. Good Luck

Jun 18, 2006 | Zenith IQC50H94W 50" Rear Projection...

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