Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,

after I couldn't get any compensation from the alleged defective transistor, I have soldered it again. I was amazed when I was able to measure the 24V to the inverter. A few times I made on / off. Every time the 24 volts were there. Then I did connected it again to the panel and had a picture immediately. Apparently, to clean it has helped. The transistor test, I probably misinterpreted.

I'll be watching it today and tomorrow, before I finally build it back together. I hope it stays...

Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,

i found [URL="http://www.ebay.de/itm/2SD526-ISC-TOSHIBA-SEMICONDUCTOR-/200913218427?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2ec75c6b7b"]this[/URL] on ebay. It's in UK but ship to germany. Perhaps i will order some more parts (Mosfets FQPF5N50C, IC MC33067) there because to save the shipping costs.Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,

i found [URL="http://www.ebay.de/itm/2SD526-ISC-TOSHIBA-SEMICONDUCTOR-/200913218427?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2ec75c6b7b"]this[/URL]

Re: Samsung 24" power supply BN44-00195A first stage voltage?

Currently I am still looking for a replacement for the transistor. Unfortunately, I can measure something at the power supply again. So far I have not found a German shop who want to sale me this transistor

Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,

please excuse my late reply. In this week I bought the alcohol in a pharmacy. Yesterday I've tried to clean the components better. Even so it is not so easy.
I have a transistor (QB801) unsoldered which was full of this adhesive.

I do not know if I made him when desolder broken or it was already broken. Anyway, I've tested it according to these instructions [URL="http://www.hobby-bastelecke.de/halbleiter/transistor_pruef.htm"][B]Click[/B][/URL] (sry in german) and...

Re: Samsung 24" power supply BN44-00195A first stage voltage?

The Thread is about another Power Supply Board, the BN44-00175A.
My Board BN44-00169A has 3 resistors below the big cap. One i can identify (RB808) has only 2 Ohm (Red/Black/Gold/Gold) and another could be 100kOhm (Braun/Black/Yellow/Gold).
Tomorow i will try to clean. I am not sure i have these alcohol. I hope it will work

Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,
i can't edit my last post, so i do these new.

[URL="http://www.abload.de/gallery.php?key=xfz8MUZT"][B]Here[/B][/URL] is also a new Link.Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,
i can't edit my last post, so i do these new.

[URL="http://www.abload.de/gallery.php?key=xfz8MUZT"][B]Here[/B][/URL] is also a new Link.Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,
...

Re: Samsung 24" power supply BN44-00195A first stage voltage?

Hi,

excuse my bad english. I also have a problem with my Samsung 245B Plus. The power supply board is the BN44-00195A.

The problem is Power LED on and often no picture. So I've already replaced the capacitors. Unfortunately, with no improvement. The next step i want to do is to remove the glue from the components. But it's not so easy. Do you have a hint how I can do it best?

The flashlight test I did and saw a picture. Furthermore, I have already measured from the power...