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Old 19th June 2012, 12:20 AM   #1
Itsme is offline Itsme  United States
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Exclamation Need help:Power supply Capacitor!

I'm trying to repair a transformer that blew a capacitor inside of it and I can't make out what to replace it with. All I can make out on it is a "63" and "12" it looked like a film capacitor with heat shrink on the outside. I found the numbers on the heat shrink part so not sure if anything to do with capacitor? If somebody could give me a good guess of what to replace it with I would be great-full! Here are some pics of the power supply.

T-opto transformer 001.jpg

T-opto transformer 002.jpg

T-opto transformer 003.jpg

T-opto transformer 004.jpg

T-opto transformer 005.jpg

T-opto transformer 006.jpg

T-opto transformer 007.jpg.
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Old 19th June 2012, 11:25 AM   #2
DF96 is offline DF96  England
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You have given us four good pictures of the burnt PCB, and two out-of-focus pictures of the capacitor. The other way round would be more helpful!

Although the box describes itself as a transformer, it appears to be an SMPS.
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Old 19th June 2012, 04:53 PM   #3
Itsme is offline Itsme  United States
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Quote:
Originally Posted by DF96 View Post
You have given us four good pictures of the burnt PCB, and two out-of-focus pictures of the capacitor. The other way round would be more helpful!

Although the box describes itself as a transformer, it appears to be an SMPS.
Sorry, Capacitor was so damaged i didn't think it would be much value to look at. The two numbers I found were on the small crumbs that broke off of it.
Any other pictures needed please let me know.
Thanks
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Old 19th June 2012, 04:55 PM   #4
Itsme is offline Itsme  United States
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forgot pics.
Attached Images
File Type: jpg T-opto transformer 008.jpg (154.4 KB, 263 views)
File Type: jpg T-opto transformer 009.jpg (159.6 KB, 258 views)
File Type: jpg T-opto transformer 010.jpg (144.1 KB, 252 views)
File Type: jpg T-opto transformer 011.jpg (139.9 KB, 249 views)
File Type: jpg T-opto transformer 012.jpg (116.5 KB, 239 views)
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Old 19th June 2012, 05:00 PM   #5
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Replace the power supply. Less costly than attempting to repair it.
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Old 19th June 2012, 06:29 PM   #6
RJM1 is offline RJM1  United States
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just a guess: ECQ-V1J124JM3 Panasonic Electronic Components | Mouser
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Old 19th June 2012, 08:27 PM   #7
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This looks like an "electronic transformer" for low voltage lighting, ie, as mentioned above, a switchmode PSU. It is very unlikely that simply replacing the blown cap will effect a repair. If you are not experienced with this type of PSU it is not advisable to try and repair it.
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Old 19th June 2012, 10:17 PM   #8
DF96 is offline DF96  England
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Quote:
Originally Posted by Itsme
forgot pics.
OK, I see what you mean! You would need to discover what made this cap go up in flames. Probably best to just replace the whole unit, unless you are skilled in fault-tracing on SMPS.
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Old 19th June 2012, 11:17 PM   #9
Itsme is offline Itsme  United States
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Quote:
Originally Posted by DF96 View Post
OK, I see what you mean! You would need to discover what made this cap go up in flames. Probably best to just replace the whole unit, unless you are skilled in fault-tracing on SMPS.
Yes, I am pretty good with fault tracing. I work on mainly audio equipment and video equipment. But I was hoping to maybe come across someone familiar with this type of electronic transformer that would make me feel better about my guess of what would replace it.
The problem was, they had 300 watts of light load on a 250 watt electronic transformer. This is the last capacitor in the circuit before going into the flyback to convert down to 12 Volts so it carried most of the load in high voltage. all the high voltage npn's check out good.
I guess worse case scenario I will send off an email to the manufacturer and ask what goes in the c8 slot.
And to the other guys suggesting replacement - I like to be challenged
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Old 19th June 2012, 11:30 PM   #10
Itsme is offline Itsme  United States
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Quote:
Originally Posted by RJM1 View Post
thanks RJM1, But I'm thinking it needs to be in the 700-1,000 volt range, the small ceramic caps are 1kv around it and another metalized film in c2 position is 630 volts. My guess is Metalized Film 1kv 1.0uf? just not sure.
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