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Crumbtrail TV Forums: TV Equipment: LCD TV Forum:
Samsung LE19B450C4W - SMPS Problem

 

 


alex0751
New User

Mar 8, 2016, 2:37 PM

Post #1 of 5 (4360 views)
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Samsung LE19B450C4W - SMPS Problem Can't Post

Hi all.
This is my first post here. I hope you can help me.
I have this Samsung LCD. The problem is with the power board: it blows up the fuse and thermistor.
I had left it apart for a few months, after trying and repair it. At that time I changed the driver IC and checked the rectifier bridge and the High Voltage Cap.
Now I would like to try again and need your suggestions about what to check.
Does anyone have the schematic? The board model is PWI1902ST.
Thank you

Alex



Ron.M
Veteran


Mar 8, 2016, 5:54 PM

Post #2 of 5 (4349 views)
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Re: [alex0751] Samsung LE19B450C4W - SMPS Problem [In reply to] Can't Post

 
alex0751;....

Here is where you can get the Service Manual;=>..
http://elektrotanya.com/...4c.rar/download.html
Scroll down under where it says "Document Preview" to "This file is downloadable free of charge: Get Manual" & click on "Get Manual"..
This is a 47.6 MB file , so you should have everything you need...
IF you need further help , come back here...

Good Luck...


Later...Ron.M...Cool...
Veteran & Retired TV technician

(This post was edited by Ron.M on Mar 8, 2016, 5:57 PM)


alex0751
New User

Mar 8, 2016, 6:12 PM

Post #3 of 5 (4341 views)
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Re: [Ron.M] Samsung LE19B450C4W - SMPS Problem [In reply to] Can't Post

Thank you very much Ron for your reply.
Unfortunately there seems to be anything but the power board schematic inside that rar. Frown

The IP board is PWI1902ST, anyone has got it, please?


Ron.M
Veteran


Mar 8, 2016, 6:42 PM

Post #4 of 5 (4336 views)
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Re: [alex0751] Samsung LE19B450C4W - SMPS Problem [In reply to] Can't Post

 
alex0751;....

Samsung along with some other LCD TV manufacturers think that their Power Supplies & other schematics are some sort of "TOP SECRET" circuits that if released will harm National Security !!!
We ALL know that that is unadulterated BS !!!..
Here's another Service Manual for the SAME model TV...
This one is a smaller manual (28.4 MBs) that you might get lucky with...
http://elektrotanya.com/...5b.zip/download.html
IF there is no Power Supply schematic , you are SOL !!!..
There's none to be had..

You might be better off just replacing the board...


Good Luck...


Later...Ron.M...Cool...
Veteran & Retired TV technician


jts1957
Veteran


Mar 8, 2016, 11:29 PM

Post #5 of 5 (4330 views)
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Re: [alex0751] Samsung LE19B450C4W - SMPS Problem [In reply to] Can't Post

http://elektrotanya.com/...ch.pdf/download.html


-------------------------
Location: Far, Far Away

(This post was edited by jts1957 on Mar 8, 2016, 11:29 PM)

 
 
 


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