Question about Sony Cyber-shot DSC-W50 Digital Camera

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Lcd backlight blown, poss. capacitor?

Camera got wet and was operated before fully dry shorting something in the lcd circuit (there was a loud pop and the unit shut down). I've opened the camera and the lcd screen (which still works) and the backlight show now visible damage or signs of a short. I assume that a capacitor overloaded anyone with a circuit layout or instructions for disassemblyor any advice would be welcome! This is frustrating as taking it to be repaired would probably cost more than the camera cost me, every other function on the camera works perfectly.

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The flash capacitor witch stays charged for days even when your camera off has very high voltage on it and probably arched over into more that just blowing your lcd screen.

only thing I would do is junk it or buy one on ebay with minor problems and start repalcing boards, get some fine jewlers philips screwdrives and small flat, and be very careful. I wouldnt try to replace any surface mounted componets.

Posted on Jan 18, 2008

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Posted on Jan 02, 2017

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Philips LCD 170S Backlight problem.. only turns on 1 second and than the backlight goes off..... which component at the power supply board i can replace it?? thanks


It can be DC filters caps with leaking/bulging tops, or they have high ESR, bad transistors or IC or transformers in the backlight inverter circuits, bad lamps assemblies. Please read below and look at the pictures of bad caps, failed monitors, and troubleshooting guides.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

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

http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Oct 08, 2010 | Philips 170S6FS 17" LCD Monitor

1 Answer

I have same problem, If you shine a light on screen it is obvious that its working, minus the backlight of cource...


It cam be bad cap in the power supply section or backlight inverter circuits problem, worst case can be the lamp.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

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

http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

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

http://www.badcaps.net


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

Sep 29, 2010 | Elotouch 17" LCD Monitor

1 Answer

The power is ON and with green light but the screen is black


You need to check and see if the 12v is feeding the backlight inverter circuits, also check for blown fuse for the inveter circuits.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
Capacitors kit: http://lcdalternatives.auctivacommerce.com/


http://s807.photobucket.com/home/budm/allalbums
Capacitors kit: http://lcdalternatives.auctivacommerce.com/

Aug 04, 2010 | ViewSonic VP920b 19" LCD Monitor

2 Answers

Backlight repeatedly turns off


Replace the backlight.
Google your make and model, lots of places selling replacements

Jul 31, 2010 | Belinea 10 15 55 15" LCD Monitor

1 Answer

Why my monitor blacked out?


Failed DC filter caps, cold solder joints, shorted out transistors in the backlight inverter circuits.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Board: www.lcdrepair.us

Jun 26, 2010 | Dell E176FP 17" LCD Monitor

1 Answer

Why is it that my monitor keep on and off while still in used?


You may have failing power supply or backlight inverter circuits.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

May 25, 2010 | AOC LM 520A 15" LCD Monitor

1 Answer

I'm using a Samsung T240HDTV. The screen goes to very dark frequently so that I can hardly see the image, after I turn it on. I guess may be something wrong with the backlight. Can somebody help me out...


The problem is probably not with the backlight, rather the inverter that powers the backlight. If you open the back of the lcd so that you can see the circuit board you might see several bulging, or blown capacitors. This is a common problem with lcds. If you replace the capacitors the problem should go away.

Sep 11, 2009 | Samsung SyncMaster T240HD 24" TFT LCD...

1 Answer

Heard loud pop now have no picture i have sound .


Hello Jay,
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Thanks.

Jun 15, 2009 | LG RU-42PX10 42 in. HD-Ready Plasma...

1 Answer

LCD Monitor is black... blowing transistors


Bulging or "blown" electrolytic capacitors are a common problem with LCD monitors. If you replaced them with correct parts (voltage rating) then one of two situations comes to mind:
1. Electrolytic caps are polarized, if you install them backwards they will blow quickly.
2. The voltage the circuit provides exceeds the rating of the cap. A 5 volt cap in a 12 volt circuit will blow quickly. The voltage regulation circuit may not be working.
Monitor Mike


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1 Answer

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