RCA 32" TV (blows horizontal output)

Reply

  #1  
Old 09-14-08, 01:11 PM
G
Member
Thread Starter
Join Date: Aug 2004
Location: North Central Ohio
Posts: 339
Received 0 Votes on 0 Posts
RCA 32" TV (blows horizontal output)

I am working with an RCA model 32F530T TV.
The chassis number is ATC113-CD4.
The unit makes a constant chirp noise when plugged in.
I checked it out and found that the horizontal output
transistor was shorted, its a 2SC5148 with no internal
damper diode. I checked the surrounding components
and solder joints all appear to check ok. I replaced the
transistor but when I plugged the unit in it popped the
transistor and started chirping again. I'm thinking
that the flyback may be at the source of the problem.
However I have seen so many replace it in cases like
this just to find that it really wasnt problem and I dont
want to be among them. (Any help would be apreciate)

Something I noticed when replacing the HOT is that they didnt
use any heat sink compound on the transistor surface.
Is there any reason why I shouldnt use any?
 
Sponsored Links
  #2  
Old 09-14-08, 02:11 PM
C
Member
Join Date: May 2008
Location: USA
Posts: 1,086
Received 0 Votes on 0 Posts
The flyback transformer is the # 1 problem with this model set.Don't need heat sink paste on hot,does not run hot in this set.
 
  #3  
Old 09-15-08, 04:05 PM
G
Member
Thread Starter
Join Date: Aug 2004
Location: North Central Ohio
Posts: 339
Received 0 Votes on 0 Posts
Thanks for the reply,
I'll see about getting a flyback.
Do you have any experience with ASTI or HR Diemen brand
replacement flybacks? Are they ok or no good?
 
  #4  
Old 09-15-08, 04:44 PM
C
Member
Join Date: May 2008
Location: USA
Posts: 1,086
Received 0 Votes on 0 Posts
I used to use Asti,they are good.Never bought from the other guys.
 
  #5  
Old 09-27-08, 06:51 PM
G
Member
Thread Starter
Join Date: Aug 2004
Location: North Central Ohio
Posts: 339
Received 0 Votes on 0 Posts
A new flyback and HOT got it running.

Thanks
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: