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Soundstream Rub1.2500d driver card help
Soundstream Rub1.2500d driver card help
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Old 26th February 2019, 07:57 AM   #1
rhempz01 is offline rhempz01  United States
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Default Soundstream Rub1.2500d driver card help

I need some help with identification of a few resistors on the driver card of one of these amplifiers. All are burnt.
R96
R93
R84
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Old 26th February 2019, 07:58 AM   #2
rhempz01 is offline rhempz01  United States
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1
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Old 26th February 2019, 08:22 AM   #3
Perry Babin is offline Perry Babin  United States
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R96 = 10k Use a 1/4w instead of a 1/8w
R93 should be the same as R87
R84 = 560 ohms
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Old 26th February 2019, 05:52 PM   #4
rhempz01 is offline rhempz01  United States
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R93 burns if reinstalled without the output transistors in curcuit. I checked all the c4793-a1837 transistors.
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Old 26th February 2019, 06:24 PM   #5
Perry Babin is offline Perry Babin  United States
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What's the voltage across R95?
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Old 27th February 2019, 05:58 AM   #6
rhempz01 is offline rhempz01  United States
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5.65vdc R84 completely burned up when tested that voltage.
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Old 27th February 2019, 01:13 PM   #7
Perry Babin is offline Perry Babin  United States
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Solder a bridge between pins 3 and 4 of U5.

Does anything burn with that bridge in place?
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Old 28th February 2019, 02:25 AM   #8
rhempz01 is offline rhempz01  United States
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the op amp on the driver card perry? U8? I jumped 3&5 on it and no nothing is burning with the jumper.
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Old 28th February 2019, 02:42 AM   #9
Perry Babin is offline Perry Babin  United States
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U5. An opto-coupler on the main board.
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Old 28th February 2019, 02:54 AM   #10
rhempz01 is offline rhempz01  United States
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Here?
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