Okay my best bet is to order a new set of IR fets. Do you happen to have any? I'm kinda afriad of buying counterfeit transistors. Haha orrr I have a blown punch 225.2 sitting here that has the same fets. But those mite be shorted.
could be if i was you i wait for Perry to reply to your thread he the man you want to talk for troubleshooting you amp's.
I've never purchased from this seller but they have the parts you need.
Gerber Electronics - Browse Parts - Our Greatest Component is Your Satisfaction
Did you find that one of the 9540s was shorted?
Gerber Electronics - Browse Parts - Our Greatest Component is Your Satisfaction
Did you find that one of the 9540s was shorted?
Yes indeed I did find it to be shorted out. It had a very low resistance when I pulled them out. Do you think it's just a bad output MOSFET?
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LOL yeah the price went up alright. How about this SUB Only Transistor Irf9540 | Distributed By MCM | 872905385Kinda pricey
I know I bought some last year cheap no problem, I better fix the little RF before I use them for something else. Sucks because I don't trust most other sources, though I did get some nice China transistors off ebay. Maybe they don't have to clone their own stuff.Electronix Online
IRF9540 N BY "IR" - eBay (item 390063557969 end time Apr-27-10 19:07:12 PDT)
The IRF540N doesn't work in place of the IRF540 in many Rockford amps. I don't know if the 9540N will work in place of the non-N version. He should buy the non-N if it's available.
chipper:
you can pull the outputs out of the other channel to test the blown channel to see if there are any other defective components. Check the 0.1 ohm source resistors before installing any output transistors.
Before applying power to the amp, insert a 10 amp fuse in the B+ line and have all heatsink mounted components tightly clamped to the heatsink. Also make sure that all heatsink mounted components have insulators between them and the heatsink.
chipper:
you can pull the outputs out of the other channel to test the blown channel to see if there are any other defective components. Check the 0.1 ohm source resistors before installing any output transistors.
Before applying power to the amp, insert a 10 amp fuse in the B+ line and have all heatsink mounted components tightly clamped to the heatsink. Also make sure that all heatsink mounted components have insulators between them and the heatsink.
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