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Help me repair a Compaq v700 monitor

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piwo

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monitor compaq v700

Good morning Sir
my monitor is bad. Please cant you help me to localise the fault?
After several times of demagnetasation, it went off. I have check the supply fuse it is ok.

 

Re: monitor compaq v700

Hi,
I have the same monitor. It's died.
Unfortunately I don't have the schematic diagram.
In the attached pic I indicated (with a red arrow) a component (the green one) that's fried up: it's placed on TH602.
Could you please tell me what is it? It seems a capacitor but I can't read its value.

Thank you.
 

monitor compaq v700

hi!
excuse me. my english is baisic.

TH602 sck 083

but you can have shematic diagram
 

Re: monitor compaq v700

Hi piwo.
Thank you so much for your reply.
Don't worry for your english, mine is worse than yours.
I'm going to download the schematic. Hope it's the right one.
Could you repair your monitor? Mine's got problem with the power supply. I'm trying to repair the primary part.
By the way, could you tell me the voltage on pin 3 of the power supply IC, the 2S0880? I think the zener diode is out.

Thank you
 

monitor compaq v700

hi marco0674
i don't yet repair my monitor
i don't have experience. but i continue to search.

please indication the ic 2s0880 on pic.
 

Re: monitor compaq v700

Let's try to repair our monitors together.
I could fix the power supply but now I have the same problems of yours.
Do this way: put away the component I indicated with the red arrow (please tell me its code, I lost mine) and connect a 60W lamp on the pins C and E of the board (where the component was connected).
Try this way and see if the lamp turns on and check the voltage at its pins.
With the green arrow I indicated the other component (2S0880) where I need to know the voltage (pin 3).
Let me know

Thank you
 

monitor compaq v700

Hi!
between pin 2 and pin 3 of component 2S0880, i have 19v DC.
the component indicated with the red arrow is C5801.

when the monitor is off, between C and E of componet C5801 i have 40V DC.

when the monitor is on, i have 223V DC.
i don't know what significat all those value.

merci
 

Re: monitor compaq v700

@marco0674

TH602 is a thermistor - usually used in degaussing circuits.
Don't know what the part number is .. they are usually not critical to monitor,
with the exception of it's primary purpose.
 

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