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Old 17th April 2007, 08:56 AM   #1
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Default carver m500-t schematics

hi guys, i've found a nice carver m500-t but it's faulty, 4 transistors are blown an i can't see the model of the transistors, does anyone has experience with it?i need at least a schematic to try to repair it...thanx a lot in advance!
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Old 17th April 2007, 03:49 PM   #2
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anyone?maybe someone who knows the transistors inside the amplifier...please!
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Old 18th April 2007, 05:12 AM   #3
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Those transistors are long obsolete, most likely NEC B705 and NEC D745. Carver had a service bulletin to replace them with 2SA1302 (also almost obsolete so use 2SA1943) and 2SC3281 (also almost obsolete so use 2SC5200). The new transistors are a different case style so you will have to get creative when mounting the new transistors. I have used these transistors in a M500 without any problems.
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Old 18th April 2007, 07:47 AM   #4
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thanx a lot mate!but these are final transistors, but on the same heatsink there are also smaller transistors, and they're blown...maybe i'll post a picture asap..do you have a service manual?can you send it to my email?and do you think i have to chack other components?
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Old 23rd April 2007, 10:54 AM   #5
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ok, transistors found, but the name i a fabric name! namely
A1111
C2591
how can i know which replacement to use?
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