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Troubleshooting bad rectifier
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Topic: Troubleshooting bad rectifier (Read 2606 times)
tylyview
Jr. Member
Posts: 23
Troubleshooting bad rectifier
«
on:
April 20, 2010, »
Hi,
I have finished building my freestyle and the rectifier got really hot and bulged out and now I don't have power anywhere on the circuit. what could be a possible cause?
I checked for solder bridges and couldn't find any.
Do I need to have all the chips in for the voltages to be right?
I included a pic of the back of the board.
I'll get some of the top later.
Thanks
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KeithTarpley
Administrator
Sr. Member
Posts: 1990
Re: Troubleshooting bad rectifier
«
Reply #1 on:
April 20, 2010, »
Greetings,,,
Double check the orientation of the parts also, rectifier, transformer, capacitors, etc.
Keith
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"Now I know the only foe is time." -Moody Blues
rrowan
Administrator
Sr. Member
Posts: 5899
08096
Re: Troubleshooting bad rectifier
«
Reply #2 on:
April 20, 2010, »
Picture of the front side would be also helpful
Cheers
Rick R.
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Light Animation Hobby - Having fun and Learning at the same time. (21st member of DLA)
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Warning SOME assembly required
vairmoose
Patron Member
Sr. Member
Posts: 827
Re: Troubleshooting bad rectifier
«
Reply #3 on:
April 20, 2010, »
Very hard to tell from the picture, but are the legs under the board trimmed? and, when you were testing, what was the board sitting on? Could the legs in the power section have been grounded out by something under it?
(I know... dumb questions... but I found that one of my freestyles scorced the wood surface it was sitting on ....... because of some tea spilt earlier.. )
Larry
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3 today (standing at light switch, holding two lighters)
Going live in 2012
tylyview
Jr. Member
Posts: 23
Re: Troubleshooting bad rectifier
«
Reply #4 on:
April 20, 2010, »
I double checked the part orientations all looks right, the black strip is the negative side right?
When I was testing it was inside the case and there wasn't anything under it except the plastic screw terminals.
The leads on the parts are trimmed.
If the rectifier was electrostatic sensitive I could have fried it when putting it in, I suppose.
got some pics of the front side too
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RJ
Administrator
Sr. Member
Posts: 8519
Re: Troubleshooting bad rectifier
«
Reply #5 on:
April 20, 2010, »
My guess is the Rectifier was in turned one off and this makes a dead short on the output AC from the transformer. also make sure the transformer pin 1 is in the correct place.
RJ
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Innovation beats imitation - and it's more satisfying
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Troubleshooting bad rectifier