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Old 18th July 2011, 06:19 PM   #1
m4ick is offline m4ick  United States
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Default Kicker ZR240

I replaced 2 TIP35Cs in one channel and used 75344Gs in the power supply. When I power it on now the relays engage and then disengage and it is stuck in protect.

The channel opposite the one I replaced outputs in is getting hot quickly. There are no shorted TIP35/36Cs and the TIP42/41Cs are not shorted. Not sure what to check next.
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Old 18th July 2011, 08:28 PM   #2
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What is the DC voltage on the emitter resistors for both channels when it goes into protect. Place the black meter probe on the secondary center tap or one of the non-bridging speaker terminals.
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Old 18th July 2011, 11:09 PM   #3
m4ick is offline m4ick  United States
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I get +13v on one channel and +12.9 on the other, black probe on secondary center tap, red probe on output side of emitter resistors.
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Old 18th July 2011, 11:10 PM   #4
m4ick is offline m4ick  United States
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Also, I have not touched the bias controls.
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Old 18th July 2011, 11:19 PM   #5
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I get +13v on one channel and +12.9 on the other, black probe on secondary center tap, red probe on output side of emitter resistors.
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Old 19th July 2011, 01:31 AM   #6
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Do you read 0 ohms between the RCA shields and the secondary center tap (no RCAs plugged in)?
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Old 19th July 2011, 01:40 AM   #7
m4ick is offline m4ick  United States
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yes
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Old 19th July 2011, 02:10 AM   #8
m4ick is offline m4ick  United States
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Also, the sec. center tap trace was burned from the crossover card to where the non-bridging speaker terminals meet and to the 2 film caps All of that has been redone.
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Old 19th July 2011, 02:50 AM   #9
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If you bypass the crossover card, do you still have DC?

Do you have both positive and negative regulated 15v?
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Old 19th July 2011, 12:54 PM   #10
m4ick is offline m4ick  United States
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The crossover card is bypassed and it is generating + and - 15v. ~+13v DC is still present at the emitter resistors.
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