Posted on Dec 16, 2010

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Dim get on just four second and before 2 transistor 5707 is broken and i replaced

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Bud Martin

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Posted on Dec 16, 2010

Bud Martin

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Did the new transistors shorted out? You maut make sure to checkt the gray tuning caps in the inverter output sections, if they are bad, the inverter will run at the wrong frquency and burns uo the transistors. You also need to look real close at the solder joints in the inverter sections, especially around the inverter transformers.
12vdc is OK?
http://s807.photobucket.com/albums/yy352/budm/Dell%20E173FPb/

You may be better off getting the replacement board:
Replacement board: http://www.lcdrepair.us

Hopefully the lamp assemblies are OK.

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

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Bud Martin Dec 16, 2010

Service manuals:

http://elektrotanya.com/?q=showresult&am...

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Related Questions:

0helpful

1answer

HP Pavilion F1703 goes black after 2 - 3 seconds

Resolder the leads of the four TOROID inductors, make sure to remove the old solder, clean the leads real well and resolder. Also check caps for leaking/bulging tops and bottom seals, check the transistors (c5706/5707) for shorts.
See my pictures here:
http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/

Basic LCD monitor and LCD TV troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV, Monitors, Caps : http://s807.photobucket.com/home/budm/allalbums

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitor kits: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find

Read full answer

Nov 14, 2010 • HP Pavilion F1703 17" LCD Monitor

0helpful

1answer

I have a Dell E172FPb LCD monitor with a black screen and blinking power light, no leaky or swollen capacitors inside, what can I do to repair it? Thanks.

Check out the four transistors (c5706/5707) Emitter to Collector (see picture of the transistor in my transistor album for pinout), it should read open circuit (should be checked out off the board). This is common problem. Make sure to inspect the solder joint in on the board, especially around the inverter transformer pins. Make sure the fuse read out less than one Ohm also.
http://s807.photobucket.com/albums/yy352/budm/Dell%20E173FPb/

Basic LCD monitor and LCD TV troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV, Monitors, Caps : http://s807.photobucket.com/home/budm/allalbums

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

Replacement board: http://www.lcdrepair.us

Read full answer

Nov 06, 2010 • Dell E173FP 17" LCD Monitor

0helpful

1answer

My monitor goes black I only see the screen for 2 seconds. I already replace cords. Please help.

Try removing the old solder from the toroid inductors (4), clean the leads real well and resolder.
See my pictures here:
http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/
I hope it does not have bad transistors (c5706/5707).

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV, Monitors, Caps : http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitor kits: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

Read full answer

Nov 05, 2010 • HP Pavilion F1703 17" LCD Monitor

0helpful

1answer

Monitor goes to black screen after only a few seconds

This a very common for this model, it was so bad that HP had recalled it years ago. Look for cold solder joints on all 4 round inductor, check all four transistors (c5706/5707), the caps.
http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/
Alos

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Aug 14, 2010 • HP Pavilion F1703 17" LCD Monitor

0helpful

1answer

Screen goes blank after a second

More likely to be transistors.
http://s807.photobucket.com/albums/yy352/budm/Dell%20E153FPB/

Check the solder joints, fuse, transistors (c5706/5707), caps and look at other Dell albums also.
Replacement bd: www.lcdrepair.us

Read full answer

Apr 29, 2010 • Dell E153FP 15" LCD Monitor

2helpful

1answer

My Dell monitor wont get out of the power saving mode. I unpluged and disconnected everything. Then pluged back. Still same problem.

It is more likely to be bad inverter cicuits due to shorted out transistors (four c5706/5707). The power light blinking?

Read full answer

Jan 23, 2010 • Dell E173FP 17" LCD Monitor

1helpful

1answer

Monitor goes dark 2-3 sec after power up, green lite stays on

Look for shorted out transistors (four, c5706/5707) in the inverter backlight transformer driving circuits.

Read full answer

Jan 21, 2010 • Dell E153FP 15" LCD Monitor

0helpful

1answer

I turn it on and in a couple of seconds it turns himself off

Check for bad fuse and shorted (Emitter to Collector) transistors C5706/5707.
http://s807.photobucket.com/albums/yy352/budm/Dell%20E15x%2017x%20series%20PWR%20INVERTER%20BD/?action=view&current=DSCF0828.jpg

http://s807.photobucket.com/albums/yy352/budm/Dell%20E173FPb/

Read full answer

Jan 19, 2010 • Dell E172FP 17" LCD Flat Panel Monitor

0helpful

1answer

My screen com runs for a second then goes black

Look for shorted out transistors (4) (c5706/5707) in the inverter circuits. Also look for bad caps, see http://s807.photobucket.com/home/budm/allalbums

Read full answer

Jan 15, 2010 • Dell E153FP 15" LCD Monitor

0helpful

1answer

I just got a LCD monitor (not new) and it turns on fine, but after about 2 seconds it gets dim, like the brightness is all the way down (which it isn't). I've messed with all the front panel settings and...

You have bad transistors (C5706/5707) in th inverter circuits, common problem with this model.

Read full answer

Dec 18, 2009 • Dell E173FP 17" LCD Monitor

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Dim get on just four second and before 2 transistor 5707 is broken and i replaced

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Bud Martin

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HP Pavilion F1703 goes black after 2 - 3 seconds

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Dim get on just four second and before 2 transistor 5707 is broken and i replaced

1 Answer

Bud Martin

Add Your Answer

Attachments: Added items

Related Questions:

HP Pavilion F1703 goes black after 2 - 3 seconds

I have a Dell E172FPb LCD monitor with a black screen and blinking power light, no leaky or swollen capacitors inside, what can I do to repair it? Thanks.

My monitor goes black I only see the screen for 2 seconds. I already replace cords. Please help.

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I just got a LCD monitor (not new) and it turns on fine, but after about 2 seconds it gets dim, like the brightness is all the way down (which it isn't). I've messed with all the front panel settings and...

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