Monitor blinking power button repair

This is usually the problem and solution

Category:

Science & Technology

Tags:

• lcd
• monitor
• capacitor
• won't
• come
• on
• broken
• amazon
• radio
• shack
• electronics
• circuit
• board
• how-to

[shadowhand56]

ive been looking at some random circuit boards lately, and I wonder why is it that what they all have in common is that they have a lot of capacitors on them? I understand why they have a lot of IC chips, but i always see a bunch of capacitors. Is it necessary?

[ToppervisionEnt]

@shadowhand56 It must be, they're still on everything. I don't know a whole lot about engineering the board.

[alanstarkie2001]

Mike - a man of many talents. I used to be a camcorder repairman and I have replaced very many electrolytic caps in the past - especially the small silver ones. For circuits that run hot and/or being used in hot environments - go for the 105 degree type. It is satisfying to fix things isn't it? Good tutorial.

[ToppervisionEnt]

@alanstarkie2001 Indeed. I like salvaging things that seem doomed. Curiously, as you mention camcorders, I'm gonna try to fix the Sony. And I'll film it with the Xacti.

[greyareaRK1]

Ha - I was looking for tips on my current monitor, but as it happens I have that exact monitor sitting in my basement (and it died in much the same way). I don't know how to do circuit repairs exactly, but those were good tips (re: capacitors). Thank you!

[f1r31c3r1]

Use a higher Voltage value for the one that vented. Doing so should stop the problem from happening again so that any voltage spike wont vent it again.

[f1r31c3r1]

@shadowhand56 Capacitors are you for two major uses, one is as a filter to clean the signal or remove interference the other is to time, manipulate the signal. Eg if you wanted the monitor to turn on each back light with a second delay you can use a resistor and a capacitor connected to a transistor base which means the transistor wont conduct until the capacitor reaches X charge.

[kinstar]

@shadowhand56 i think the reason why they use capacitors is coz they can hold and release power quickly thats why i think maybe lol

[treeelee11]

Thanks for the video - Found my bad capacitor and fixed my monitor :) saved a bunch my first time

[samchowuk]

It is good video that can identify the faulty capacitors. Thanks

[marc1bb]

very good tutorial.

What is the software that you are using to capture and edit this video?

thanks

[xLoadingPilot]

where do u buy those capacitors ?

[luisss23x1]

I have a Dell 15" FPC monitor that the power button keeps blinking on and off I checked the power board caps and they look ok any suggestions?