Question about BenQ FP737S-D 17" LCD Monitor

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Found them ah found them....so if i change these 4 will it make the screen work again?? do i test them as a normal transistor test ? can i test them in situ on board or remove to test ? many thanks for your help viziks....andy

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If you are referring to the C5707 inverter driver transistors, you can test them in circuit with an ohmmeter. Usually one pair will show shorted although only one may be actually shorted. Normal procedure is to replace the pair that shows in circuit short. If you do not resolder the transformer connections your transistors will short again.
Monitor Mike

Posted on Jan 04, 2009

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Posted on Jan 02, 2017

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1998 toyota corolla hard to start when hot


hot soak ,no starts 101:
which engine?, cant guess that. say it. please."name /size"
is it flooding or starving
hard to start , so that is easy you are parked, and makes diagnosis so easy, (no need to move)
you skipped the fuel filter:?
why not use a scan tool now.?
you crank for 5 seconds, see P03xx errors. DTC'
THE ECU REPORTS ALL CMP AND CKP SENSOR ERRORS!
bingo now you have your answer , finding this, scan tool free is hard hard work. am i to tell you that hard way, sure.
1:test spark on all cylinders ,same way 100 years, google it.
2: ok sparks good, i check all spark plug tips, for wet and dry or soaked in fuel.
3: i see dry, , i use test fuel (same way for 100 years,)
run on test fuel (my Model a ford, same way works.....)
4:; ah one plug is soaking , ah leaking injector
5:ah, all plugs wet, (too high fuel pressure, ECT stuck cold
if all are wet, I stop, there are lots of tests for this.(bulleted below)

  • fuel pressure (KEYON, cranking and running and W.O.T.)
  • injector leak down tests. all of em;'
  • injector balance test (ALL)
  • Fuelpump regulator 4 tests

all this perplexing, get your ASE mechanic in the loop.

Dec 26, 2014 | 1998 Toyota Corolla

1 Answer

I dialed ##8378<SEND>, then clicked


Typing ##8378 Send brings up the phone test screen. When you select #2 (Field Test) and then select OEM monitor and select "enable" the phone resets and enters test mode.
In test mode you can press the volume up button to bring up the test menu. You can navigate this menu using the 1 and 3 keys on the number pad.
The most notable screen in test mode is found by pressing 3 until you reach SHDR protocol monitor will bring up the screen that displays real time reception and transmission information.
Other screens display other system information, but I caution against "playing around" with these menus too much.
To temporarily hide the test mode screen you can press the volume keys again. To take the phone out of test mode completely follow these steps:
1. dial ##test or ##8378 and press send 2. select 2 (field test) 3. scroll down to and select 10 (OEM monitor) 4. scroll down and select Monitor DISABLE 5. the phone will reset and return to normal mode.

Feb 13, 2011 | Casio G''zOne Type S Cellular Phone

1 Answer

Dell E173FP power led orange/flashing failure returns


First, you can get the service manual here: http://elektrotanya.com/
If the transistors failed again, yes the 0.22uf (part of tuned circuits for the inverter transformer oscillator circuits) changed value, the frequency will be off and causes over heat on the transistors due to too much current draw, You can also have bad inverter transformer, you can check the DC Ohm value but if it has one short turn, it will not show up on DC Ohm test, you have to use ringer testing (I use SENCORE LC75).
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Mar 29, 2010 | Dell E173FP 17" LCD Monitor

1 Answer

No picture at all,sound ok 3 tube crts off after 4secs when on


might be a crooked flyback transformer, first check for shorted transistors around the transformer and components at the horizontal output stage..

Mar 31, 2009 | Philips Televison & Video

3 Answers

Dell E152FPc Monitor powers up, and screen goes blank in 5-10 sec


ok every one there is a fix the are 4 transistor 2sc5707 and 2 transistorfu9024n and i cap 16v1000uf
if you replace these your problem will be fix for a while but to it better then dell replace the 2sc57o07 with radio shack tip3055 they are 15 amp trans instead of the low 8 amp dell uses they fail because the amps at the test for the transistor is more than 8amps all the correct parts are sold in a kit on ebay look up the 2sc5707 but i recommend upgrading to the tip3055 transistors they are a bigger transistor but you can lay them down and they work great. the capicator can be found at radio 35v1000uf is a good replacment make you monitor better because the new parts are stronger then the originals so no more failures after.

Jan 26, 2009 | Dell E172FP 17" LCD Flat Panel Monitor

2 Answers

Monitor turn on but only a black background appears


Is that white substance heatsink greese that's been burned up or the transistor fried with some melted tape?

Jul 03, 2008 | Dell E173FP 17" LCD Monitor

6 Answers

BenQ FP731 17" LCD Monitor Problem


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

Nov 14, 2007 | BenQ FP731 17" LCD Monitor

6 Answers

Dell E172FPb 17" LCD Monitor Problem


Your inverter power supply has gone bad. You will need to replace the whole board or replace the the 2sc5707 transistors in the inverter area. Check out this link for installation videos and how to for that model
http://www.lcdrepair.us/Installation.html
They also sell the whole board as well as repair kits

Oct 27, 2007 | Dell E153FP 15" LCD Monitor

5 Answers

Horizontal output transistor keeps failing


The horizontal output transitor is always connected to the primary winding of the flyback transformer (via collector) and also to the horizontal deflection coil via an electrolytic capacitor. The most likely suspect for damaging the transistor is the fylback transformer. In some countries there are electronic stores that test flyback transformer by winding a few turns on the ferrite core and applying a test voltage. This test will only test the secondary. The primary winding is difficult to test for turn to turn short because the resistance is quite low and you do not know the 'good' resistance.

May 15, 2007 | ViewSonic E70f 17" CRT Monitor

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