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Old 18th December 2012, 09:31 PM   #1
ultra is offline ultra  Greece
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Default soundstream tr500/4

Got this amp for repair.
Its in very poor condition and obvious that someone not very proficient tried to repair it before me.
For start, does anybody know what are the original power supply fets?
This thing has only one bank of buz90s with 22R gate resistors.
Additionally the thermal (NTC?) resistor is missing...
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Old 18th December 2012, 09:53 PM   #2
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If no one here knows, email SoundStream.
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Old 20th December 2012, 06:58 PM   #3
ultra is offline ultra  Greece
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I did.
No answer after 48 hrs
If i am not wrong the amp has a totem pole of mpsa06/56 per side.
I think of changing the gate resistors to 47R and using 3205 or 70N06.
But i know nothing about the thermal component.
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Old 20th December 2012, 07:30 PM   #4
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Try emailing them again.
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Old 21st December 2012, 07:41 PM   #5
ultra is offline ultra  Greece
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Ive tried twice to mail them to tech-support@soundstream.com but still no reply
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Old 27th December 2012, 11:33 PM   #6
ultra is offline ultra  Greece
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Still no reply. Are those people for real?
Sorry, i cannot wait any more.
If i use IRFZ44s for power supply fets,do i use 22R gate resistor?
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