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Well, looks like Last Chance Saloon,before the Backlights become the Main suspects,so I would resolder the Inverter transformers,and all other joints between the secondary and the Lamp sockets,eg the small Blue Caps etc etc. Here’s the BOM from mouser. I get the rapid blinking power LED no button functions. Referencing other people’s pictures doesn’t help us diagnose YOUR problem.
I went to an electronics shop and the guy looked at the power board and got me some new caps to replace the 3 that were bulging. Im not very good in electronic to track it to the controller.
I am unable to find a data sheet on the controller; if a data sheet could be located it should be very easy. I had a similar problem with my Samsung B as well. I didn’t check that they exactly matched the old ones.
BIT3195G, BIT3713, BIT3715
If I can get this working, I will absolutely change them. Symptoms upon turning it on were no reaction but the rapidly bitt3195g led as well. I learn quickly but I bih3195g following this thread from the start and i replaced the caps. Originally Posted by alexanna Post I am unable to find a data sheet on the controller; if a data sheet could be located it should be very easy.
Maybe, but measure the resistance of the secondaries of both of the Inverter transformers, they should be very very similar measurements. Thanks again badcaps forum!
Well, I’m no expert on electronics. Any idea dataseet else to look? I knew the incorrect voltage caps were not a good idea, but I figured it was mostly for the reason that they would burn out very quickly as opposed to not working at all.
Any help would be appreciated and I will get some pictures of the boards. Can you read a number on the 16 pin back light controller? Would the incorrect voltage contribute to this, or is my ccfl likely burned out as well? You can see picture but still no backlight. Thanks again for the responses. Can we get clear and focused picture of YOUR boards?
Replaced picofuse with litle wire. I still will take some pics if I ever get some time. However now the LCD works but the backlight still does datasneet.
What part did you change? As for the backlight, on some of these boards, a fuse F datasheet used for the inverter section. Anyone have any ideas? Originally Posted by gypsy Post That fixed it! Well bright side is I am still mentally challanged. Originally Posted by jetadm Post As for the backlight, on some of these boards, a fuse F was used for the inverter section.
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There are other ways but this is maybe the best way for you. I hope to get this fixxed nothing like a free 19″ monitor. I replaced all caps and picofuse but still no backlight. Ok thanks all for the feedback. Check for proper voltages at the inverter.
Attached are pictures from after the 3 caps were datashete. Okay so I got the pictures. Bad caps are still plaguing things inI have the same Samsung b, same problem I know it’s no suprise with the white but here is what has me dumbfounded when the cable for the screen is connected the I get just the blinking LED.
Your board could have unique characteristics not shown in someone else’s photo like a charred resistor or suspicious looking transistor. Page 3 of 4. Originally Posted by nesmrten Post What part did you change?