Repair of 2007 Victor 884

[Gdeaver]

I don't have time to do it this morning but I believe the IPP042N03L G matches ok with the others. You can check the data sheet for the match ups. I believe I used these and they seem to work fine.

[vamfun]

Originally Posted by Gdeaver

I don't have time to do it this morning but I believe the IPP042N03L G matches ok with the others. You can check the data sheet for the match ups. I believe I used these and they seem to work fine.

Ok..lets compare (Vdss,Rds_on,Id)
IRL3103 30v,12mho,64 amp 2004 Victor
2n03L13 30v,12.9 mho,42 amp 2007 Victor
042N03L 30v,4.2 mho,70 amp Gdeaver replacement

So the 042N03L looks more capable and would make a nice substitute. But this raises a question: What constitutes a First legal 884?

AllElectronics is a few blocks from me and has a stock MTP75N03HDL
http://www.datasheetcatalog.org/data...75N03HDL-D.PDF

MTP75N03HDL 25v,9 mho, 75 amp AllElectronic sub

This might work too, but probably shouldn't be legal for competition right?

[Joe Ross]

Originally Posted by vamfun

So the 042N03L looks more capable and would make a nice substitute. But this raises a question: What constitutes a First legal 884?

I think per <R60> it wasn't legal as soon as the case was opened.

[vamfun]

Originally Posted by Joe Ross

I think per <R60> it wasn't legal as soon as the case was opened.

I'm with you there Joe. "shall not be tampered with, modified, or adjusted in any way (tampering includes drilling, cutting, machining, gluing, rewiring, disassembling, etc.) " Seems clear that disassembling for home repair makes your 884 a practice controller even if replacing with OEM parts. So we really might be better off getting a certified repair and saving a few bucks there if the competition supply is getting low.

[vamfun]

Originally Posted by vamfun

I'm with you there Joe. "shall not be tampered with, modified, or adjusted in any way (tampering includes drilling, cutting, machining, gluing, rewiring, disassembling, etc.) " Seems clear that disassembling for home repair makes your 884 a practice controller even if replacing with OEM parts. So we really might be better off getting a certified repair and saving a few bucks there if the competition supply is getting low.

Email response from IFI. So much for a certified repair

Chris,

If you have blown FET’s on your Victors, we generally don’t attempt to repair them. There are parts that have been compromised beyond just the FET’s and the cost becomes more to repair than to replace.

Regards,

Tom Watson

VEX Robotics

(903) 453-0820

[sanddrag]

Has anyone actually successfully repaired one? It seems there are large copper busses in the middle of the board, which sink all the heat away when trying to clear the through-holes. After giving this a try, I now know why IFI doesn't bother repairing any.

[vamfun]

Originally Posted by sanddrag

Has anyone actually successfully repaired one? It seems there are large copper busses in the middle of the board, which sink all the heat away when trying to clear the through-holes. After giving this a try, I now know why IFI doesn't bother repairing any.

Take a look at this http://www.chiefdelphi.com/forums/sh...4&postcount=31

What replacement FETs did you decide on?

[Al Skierkiewicz]

Originally Posted by sanddrag

Has anyone actually successfully repaired one? It seems there are large copper busses in the middle of the board, which sink all the heat away when trying to clear the through-holes. After giving this a try, I now know why IFI doesn't bother repairing any.

Sandy,
It depends on the damage. If just one FET or two are bad, the cost to replace probably justifies the repair. Common thinking is that anything beyond a simple FET failure has likely stressed other components to the point of being unreliable in the future.
I have had success with larger Weller tips using Mike Betts' method. However, I heat only the pin and remove it when the solder melts. Then I clean the hole using solder sucker rather than the wick. If one of the holes is still clogged, then I simply heat the new transistor pin as I insert it.