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Old 23rd December 2012, 02:51 PM   #11
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Join Date: Nov 2003
Location: Louisiana
The problems are generally where the terminal windings meet the rest of the windings.

If you can't find it, disconnect the amp completely and connect the B+ through a current limiter. Connect the 12v power supply ground to the secondary ground. Twist the transformer. Does the current increase when you twist the transformer?

Does it arc when you twist and release (or twist the other way) as the current increases/drops to 0?
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Old 23rd December 2012, 04:12 PM   #12
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I saw one of them arcing fixed that but both of the transformers will increase and decrease the voltage on he D1302's the amp will start drawing excessive current ...


If i touch either transformer i get zapped everytime..
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Old 23rd December 2012, 04:17 PM   #13
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It may be OK if there isn't a direct short.

You get zapped because the enamel doesn't have sufficient dielectric strength and the voltage is leaking through. This is a problem on a lot of the larger amps.
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Old 23rd December 2012, 04:29 PM   #14
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Now i have to find out why 1 time the amp will stay in protection and then if i wait for awhile and power it back up it will come out of protection and draw 20 amps of current..

Power supply fets will heat up as well..
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Old 24th December 2012, 04:30 PM   #15
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Location: Louisiana
If the output transistors are not being driven off quickly enough, it could be going into protect and if the threshold level for the over-current protection is just at the level of current it's drawing (due to the outputs not being driven properly), it could be simply drawing current (but not quite enough to trigger the protection circuit).

Do the outputs get hot when it's drawing 20 amps?
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Old 24th December 2012, 04:54 PM   #16
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The outputs The audio driverboard and the Rectifiers are all out of the amp at the moment trying to figure out why the amp will be in protection 1 time then the next time it will power up and draw 20 amps of current
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Old 24th December 2012, 05:11 PM   #17
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Are you sure that you don't another intermittent short on the transformers?
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Old 24th December 2012, 05:19 PM   #18
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Im checking that right now
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Old 23rd January 2013, 10:13 PM   #19
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Ok Power supply is up and running in this amp..

I installed the Audio Driverboard..

Outputs are still out of the amp..

Heres what i get on the Pins for the Audio Driverboard Do thees voltages look correct??

Pin 1:-156.0
Pin 2:-144.9
Pin 3:-157.2
Pin 4:1.60
Pin 5:1.60
Pin 6:-157.4
Pin 7:1.60
Pin 8:1.60
Pin 9:-157.4
Pin 10:-157.4
Pin 11:-157.4
Pin 12:1.18
Pin 13:16.49
Pin 14:6.58
Pin 15:1.61
Pin 16:1.60
Pin 17:-3.24
Pin 18:1.62
Pin 19:-157.4
Pin 20:-157.4
Pin 21:-145.2
Pin 22:-157.4
Pin 23:1.60
Pin 24:1.60
Pin 25:-157.4
Pin 26:1.60
Pin 27:1.60
Pin 28:-157.4
Pin 29:-157.4
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Old 23rd January 2013, 10:57 PM   #20
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See post above..

I installed the outputs and powerd the amp up it ideas perfectly but i get no output..

Heres what i have on the D1302's with black probe on leg 1..

D1302

Leg 2:0.00
Leg 3:0.60

D1302

Leg 2:0.00
Leg 3:0.60
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