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ZAPI zapi raymond f73011 1777188

  Posted by Scott Donaldson on Saturday, November 2 2013

I have two Traction Amps off two separate RTW40's, one is zapi f73011 1777188 B1S 36V and the other is a zapi F75087 1777190 B1S 48V, both AU3503. One has effected that followings:
JLT 5 & 6, has 14.1v coming out the amp
JLT 8, has 13.38v coming out the amp
JLT 7, has 8.4 ohms neutral, 9 ohms requesting travel
JGT 8, no B+ after dir. switch engaged (probably because of the JLT's)
JET 3, 4, 6 & 7, has B+

Opened it up and found that the capacitors must of heated up and the rap around them heated up shrunk up allowing the end cap to fall off and expose the bottom aluminum on the caps. Boss had me re-soldier new caps on and try but 2 rectifier diode, popped along with who knows what.

the other is unknown but wont operate at all and the same issue noticed about the capacitors.

wondering if there is circuit boards available or what the cost to repair/rebuild the two amps.

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  Posted by Gary on Tuesday, August 5 2008

zapi raymond f73011 1777188

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ZAPI zapi raymond f73011 1777188

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