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Old 25th January 2012, 01:28 AM   #1
ivkata is offline ivkata  United States
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Talking RF POWER 1500 bad psu fets substitute needed

ok got this amp to fix for personal use and its has bad psu transistors
they are irf3415 and irf6215 looking thru all parts suppliers they either don't have them or are too much money like 3 bucks each and i need 16
any good substitutes
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Old 25th January 2012, 02:23 AM   #2
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The IRF6215's and IRF3415's are the outputs..


Future Electronics has both in stock.. The 6215's are .46 apiece and the 3415's are like .70 a piece
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Old 25th January 2012, 02:33 AM   #3
ivkata is offline ivkata  United States
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how the heck do u desolder those from the small board
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Old 25th January 2012, 02:50 AM   #4
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You need to use a mini butane torch to get them off of the board ..

When you get the new outputs you need to tin them before you solder them back to the board..
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Old 25th January 2012, 05:03 AM   #5
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THIS link should help. It's for larger transistors but the process is the same.

THIS is a video clip showing the reinstallation.

Let us know when you get them all out, there are a few things you need to check.

Do you have a scope?
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Old 25th January 2012, 05:09 AM   #6
ivkata is offline ivkata  United States
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i do not
what can u recommend used for 500 or less
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Old 25th January 2012, 05:28 AM   #7
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You can buy a used one for about $100 plus shipping from eBay.

You can buy the B&K 2120B for about $400 new.
BK 2120B Oscilloscope 2-Trace Scope w/Probes 30 MHz B&K Precision 2120B
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Old 25th January 2012, 05:37 AM   #8
ivkata is offline ivkata  United States
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ok will order this boy
thanx for the advice
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Old 25th January 2012, 02:11 PM   #9
timwebb is offline timwebb  United States
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A Guy I know says u can get them from rockford.I don't what it cost though.
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