Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

I thought so, i will test for a week, if monitor working for that time i can assume that it's fixed

[selldoor]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Impossible for us to guess - you will just have to keep testing- switching on and off after
different periods of time.

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

i assembled it yesterday (after i replace the 2 x resistor 100K Ohm). When i turn it on, it worked for 5 minutes and then again no picture just blue button. I turn it off and then turn ON, and it's working since then. Should i be worried that problem will come back?

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

i figure it out, when i unplug my TV (HMDI) from graphics card, all OK. So the TV was making problem.

[selldoor]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

This may be due to failing capacitors. Does it happen if you switch it off then on again
after 2 or 3 minutes or is it just on a cold start - say after its off for a couple of hours.

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

the monitor is working for now, but i noticed that when i turn on it is darken, and after 1-2 min brightness is OK. Can you help me with this?

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

i replace 2 resistor, and monitor turn on. But here and then go off. Blue led working but no picture.

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

I am sorry for not telling you who i am and what i do for business. i will try to fix monitor and get back to let you know the result, i hope i will repair with replacing those two resistor of 100k ohm, will clean bord on that spot of melted glue.

[budm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

What ever you do, make sure to remove ALL the glue.
Diagram.

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Hi, i have same board (BN44-00195A) and monitor worked for few days and then black screen. Did anyone resolve this problem?

i remove the 2 resistors, one is 100K and other infinite ohms, so i will replace them and let you know

[selldoor]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

There are hundreds of posts regarding this monitor -
Please list what tests you have done and what results you got.

Welcome to the forum-
We can help a lot more if you please post good clear pictures of the whole chassis, and then pictures of each board, front and back (in the same orientation) and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

Please do not post inline and offsite as they slow down the loading of pages.

Examples of what is needed

https://www.badcaps.net/forum/attach...7&d=1280167246

https://www.badcaps.net/forum/attach...6&d=1280167246

https://www.badcaps.net/forum/attach...4&d=1280167246

It will be useful if you can say what the supposed fault was and a bit about yourself - skills tools etc.

Please also update your profile with country and mains voltage

[rtstorm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Hi, i have same board (BN44-00195A) and monitor worked for few days and then black screen. Did anyone resolve this problem?

[devanny]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Sorry I haven't followed up on this post. I put the monitor aside for awhile while working on other projects. As suggested in other posts, I cleaned the brown goop off of all the components on the board. That crap must have been very corrosive as many of the components show significant affects from it. I put the monitor back together and it still exhibits the same problems, solid blue power light, black screen.

I did find a service manual with schematics on another post. I will see if I can isolate the problem board by taking resistance and voltage measurements as other posts indicate the problem could be in the main board, not the power board. However, seeing the damage that brown goop did to some of the components, I'm pretty sure it will be a power board issue.

After I do the investigation, I will report he progress and post the pictures you asked for. Thanks for your patience.

[budm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Well from my 30 years of experience, I have seen it goes both way, shorted out or goes open. So I always test resistor or anything else out off the circuits.

[Rtech]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

How can the value go higher if you have other resistors/loads in PARALLEL?

Obviously not when in parallel, But normally as you are well aware these type of resistors increase in value if they fail.

[budm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Can I get good pictures of the bottom side of the board

[budm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

How can the value go higher if you have other resistors/loads in PARALLEL?

[Rtech]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Those resistors will only go higher than their rated value,not as low as you are measuring.

[budm]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Those reading may be due to other components are in parallel with the resistors.

[devanny]

Re: Samsung 245BW - Power Board BN44-00195A - No display, solid blue light.

Thanks for all the good information. I like the tool. I measured the resistors. One measured 89K, the other measured 46K. Seem to be out of spec. I'll be removing the glues and see if I can get it to fire up.