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Old 6th July 2010, 04:52 PM   #1
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Default Ppi pc1400

I just recieved another one of theese amps in for repair its missing alot of parts off the board.

power supply fets are missing which i believe are IRFZ44's

Outputs are missing Which i think are TIP35's and 36's

The next parts are missing wondering if someone knows what parts belong in theese locations

Q12
Q13
Q15
Q16
Q72
Q73
Q75
Q76

Theese locations are between the outputs

Any help would greatly be appericated
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Old 6th July 2010, 06:57 PM   #2
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If this helps theese are the parts that are missing
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Old 6th July 2010, 09:55 PM   #3
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2SA1011 and 2SC2344. The 2SAs drive the TIP36s.
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Old 8th August 2010, 04:51 AM   #4
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Ok its been awhile since i took this amp apart.

Wondering do the tip 35's go in closet to the power supply fets or do the 36's?
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Old 8th August 2010, 05:09 AM   #5
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The 36s are nearest to the supply.
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Old 8th August 2010, 06:17 AM   #6
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Ok thanks.

Next questions is how do i tell where the 2sa and 2sc parts go.

Drivers for the outputs since all 4 spots on both sides of the amp are showing continuity for the tip 36 pads
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Old 8th August 2010, 07:18 AM   #7
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The 2SAs go near the TIP36s.
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Old 8th August 2010, 06:53 PM   #8
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Ok im putting this amp back together.

My question is do i still have a problem with this amp.

With no outputs in the amp The readings i get between the pads are.

For both Tip35's and Tip 36's

From pads

1-2:9.31 k ohms
1-3:16.9 ohms
2-3: 9.12 ohms

This is the mono version of this amp.

Wondering do the readings look ok or does it apper to have another problem?
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Old 8th August 2010, 09:30 PM   #9
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less than 10 ohms from 2-3 is likely to be a serious problem. Are you sure that you don't have any defective outputs?
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Old 8th August 2010, 09:49 PM   #10
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The outputs are removed from the amp right now so are the 2sa1011's and 2sc2344's .

The reading i posted are from the pads on the board.

When i got this amp in it had blown outputs and blon power supply fets.

So im wondering what i might check next to find the problem
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