Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
So I can leave the MOSFETs in board for the measurment?...
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Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
I desoldered CM802 and my mm showed 0L. I havent measured the solder pads. Instead I measured the CM802 while still at the board. Therefore I got results of 0.7 Ohm dropping to 0.1 Ohm slowly after 5 seconds. I also attached a picture which resistor burned. Its my fault, it wasnt a transistor that blows, still the same resistor I replaced for the 2nd time now for testing purposes....
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Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
So I desoldered the both Caps and my multimeter showed 0L in resistance mode. I also removed the glue as good as I could for components who are connected/bridged by the glue. But still the same error. After replacing the fault transistor the new one burned instantly. So the glue wasnt the fault in my case. Till I only have a mm here I dont know how to check 8008HFE. Any suggestions?...
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Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
THIS power supply is causing me nightmares. I dont know what happened here, but I'm a huge amound of bad luck trying to fix this thingy. After I desoldered CM809, the PCB around the whole went off and I lost contact to the items marked red in the picture I attached. So my question here is: Can I just make a bridge with a cable to one of these components? Not sure because all of the in the red marked zone are connected to each other regarding my continuity test. Anny tips here?
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Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
Maybe I'm blind but I was not able to locate the SI-8008HFE. do I have to desolder the parts before testing? Beside that I think checking the SMDs are a pain in the ... . And because I'm not that experienced in electronics, I'm not able to replace SMD parts atm. Its said, I know...
The varistor above J824 its CM809 and shows ~1.99 kOhm. There is a 2nd part which looks like varistor called CM802 which only has a resistance 0.5 Ohm. The schematic says 47pF/1KV,...
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Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
Hi guys,
thank you for your replies. I added some pictures of the pcb. Tbh I dont know how I can remove the glue without damaging some of the components. Its very hard to remove all the glue with a screwdriver or something similar. The burned resistor is missing in the pcb because i soldered it out already....Last edited by FredFloete; 10-12-2016, 02:49 PM.
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Re: [Syncmaster 245B Plus] Problems with power board BN44-00195A
Thanks for the reply. Are the 00173A and 195A fully compatible? By replacing these components do you think this is just about the aging process of the components or do I have to do it before replacing the board in general?
And what did you mean by saying the 195A has some broken smd components? In case of a failure or in general? Can you imaging what causes the error of the burning resister on my power board?...
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[Syncmaster 245B Plus] Problems with power board BN44-00195A
Hello everbody!
Two weeks ago my old good Samsung Syncmaster 245B Plus with a faint hiss. So I took a look into the problem and found many problems with the BN44-00195A ([url]https://cdn.badcaps-static.com/pdfs/37e40dc6e13bb8b5d00b1cf8a620fd8c.pdf[/url]) on the internet. Also here, where some users had problems with bad caps. In my case all caps are looking fine and the problem may be a bit more complicated.
After I took a look at the power board if found a blown resistor with the number RM801 (22 Ohm, 1W). The two fuses were also blown. I replaced the resistor and the...
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