Author Topic: [Fixed] - Repairing a Samsung 940BF  (Read 1553 times)

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Offline raul

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[Fixed] - Repairing a Samsung 940BF
« on: September 13, 2016, 06:49:48 am »
Hi

I'm repairing a power supply (CCFL inverter circuit) of a Samsung 940BF monitor.

I change some caps and a fuse (probably works by now) but i don’t know what is the chip P610 CD6F14 (No luck with google (pt)). This chip have the paths a little baked.



Thanks
« Last Edit: September 15, 2016, 10:03:48 pm by raul »
 

Offline TheBay

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Re: Repairing a Samsung 940BF
« Reply #1 on: September 13, 2016, 06:59:14 am »
 
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Online wraper

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Re: Repairing a Samsung 940BF
« Reply #2 on: September 13, 2016, 07:05:49 am »
This chip have the paths a little baked.
This is normal, those mosfets run quiet hot and with time PCB darkens in most of the monitors.
 
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Offline raul

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Re: Repairing a Samsung 940BF
« Reply #3 on: September 13, 2016, 07:28:13 am »
Here you go:

it's a AOP610.
http://aosmd.com/pdfs/datasheet/AOP610.pdf

Thanks @TheBay. I Will save that and test this chip before i put everything together. Weird, i couldn't find the brand.


This is normal, those mosfets run quiet hot and with time PCB darkens in most of the monitors.

Probably should change that IC before burnout. If i can find one similar. Thanks
 

Offline TheBay

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Re: Repairing a Samsung 940BF
« Reply #4 on: September 13, 2016, 07:31:10 am »
Here you go:

it's a AOP610.
http://aosmd.com/pdfs/datasheet/AOP610.pdf

Thanks @TheBay. I Will save that and test this chip before i put everything together. Weird, i couldn't find the brand.


This is normal, those mosfets run quiet hot and with time PCB darkens in most of the monitors.

Probably should change that IC before burnout. If i can find one similar. Thanks

If the monitor is working leave that IC, as Wraper said that's normal.
From looking at the images that's hardly got that warm, I have seen much much worse :)
 
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Online wraper

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Re: Repairing a Samsung 940BF
« Reply #5 on: September 13, 2016, 07:41:31 am »
BTW, if it does not work after replacing the capacitors, check secondary winding of the CCFL transformers, should measure around 1k.
 
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Offline raul

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Re: Repairing a Samsung 940BF
« Reply #6 on: September 13, 2016, 08:34:08 am »
BTW, if it does not work after replacing the capacitors, check secondary winding of the CCFL transformers, should measure around 1k.
Thats useful. Thanks
 

Offline raul

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Re: [Fixed] - Repairing a Samsung 940BF
« Reply #7 on: September 15, 2016, 10:09:31 pm »
Hi

Apparently is fixed. I'm shore it has the pico fuse 3A that connects to the inverter part (main power supply and the inverter power supply is in the same board but placed in different part) if the motive of a blown fuse are in other side don't know i change some fat caps in the process... will see.

Thanks for the intel.
 


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