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Old 28th May 2010, 05:03 PM   #1
SS64 is offline SS64  United States
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Default Pc2350

I'm working on a ppi PC2350.. Can I swap out the 70n06's for 3205's? do i need to change gate resistors?
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Old 28th May 2010, 11:13 PM   #2
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I don't know enough about what the driver ICs can withstand so I'd suggest using the originals. Long term reliability may be an issue with the 3205s.
Fairchild Semiconductor Distributor : RFP70N06: Order, RFP70N06 Stock Online. Fairchild Semiconductor Distributor : 70A, 60V, 0.014 Ohm, N-Channel Power MOSFETs , Datasheets

The gate resistors are 22 ohms and won't be a problem.

The driver ICs have almost certainly failed. Order replacements.
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Old 30th May 2010, 04:17 AM   #3
SS64 is offline SS64  United States
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Alright Perry.. its a shame I have 200 3205's sitting right next to me.. All the Ic's are already on order.. I have to post a picture of this amp.. it has some sort of mod done to it and I have no idea what it is supposed to do...
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Old 6th June 2010, 03:09 PM   #4
SS64 is offline SS64  United States
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Perry didnt want to waist the board space to start another thread.. I have a buddy that is/was running a 2350 in his car.. He smoked it about two weeks ago and I told him I didnt have time to fix it yet.. Well he wanted to try it himself ( a person with little to no electronics expereiance what so ever) I told him not to and I told him what to buy and to have it ready for me in two weeks ( i figured by then I'd have some time ). Well I told him to bring it to me today... He brought it alright.. He took the transformer out and completely unwrapped it! (he thought he was doing me a favor I guess) I called him and asked what the F*** had he done... he replyed It looked burnt so i took it out for you to fix and i unwrapped it because I thought it would be easyer to fix!........

My question is Perry.. What can I do? I'm pretty sure I can wind a new one.. but were do I start? I know about the primary and secondary parts but from looking at my burnt 2350 there is another wrap with 4 smaller wires.. Can you help me?
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Old 6th June 2010, 06:18 PM   #5
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You're lucky that you'll have yours to use as a guide.

You'll have to match yours to rewind his. When you unwind yours, I'd suggest that you either take photos of it (at least 20) as you unwind it. If you have a video camera, that would be better. Have someone capture the entire process as you 'slowly' unwind it. You'll need to lay down the new windings as close as possible to the same exact layout as the original windings.

If you have any specific questions, post them.
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Old 6th June 2010, 07:22 PM   #6
SS64 is offline SS64  United States
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Damn I was hopeing that I could leave my amp alone.. it has enough issues of its own..but ok..
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Old 6th June 2010, 08:30 PM   #7
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I must be confusing your amp with another 2350. If your transformer isn't damaged do NOT unwind the transformer.
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Old 6th June 2010, 11:25 PM   #8
SS64 is offline SS64  United States
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yes My transformer is perfectly fine..
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Old 7th June 2010, 05:39 PM   #9
FireII is offline FireII  United States
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Quote:
Originally Posted by SS64 View Post
yes My transformer is perfectly fine..

I've never rewound a transformer....yet, but the 2350's looks like a P.I.T.A.
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