I have a faulty output transistor (I think it's a output type) question is, there is no sound from the left channel either, so, if 1 goes bad, does it mean that both channels will put out no sound? A it makes no sound at all, but powers up ok and the relay switch comes on.
Any fault usually trips the speaker protection relay which is common to both channels in most amps.
If you have a shorted transistor then there is a good chance there will be other damage too, at the very least the drivers and possibly any low value resistors around the stage.
If you have a shorted transistor then there is a good chance there will be other damage too, at the very least the drivers and possibly any low value resistors around the stage.
Have the schema ??
THE HARMAN KARDON HK3380 Service Manual free download, schematics, eeprom, repair info for electronics
I collect the HK stuff.
Amp is standard fare LIN design with BIG darlingtons (WOW ! MT-200's).
OS
THE HARMAN KARDON HK3380 Service Manual free download, schematics, eeprom, repair info for electronics
I collect the HK stuff.
Amp is standard fare LIN design with BIG darlingtons (WOW ! MT-200's).
OS
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Thanks peeps. Just about to order another transistor, however, do the numbers on the bottom of it make any difference? IE: 6DP, other same types numbers vary at the bottom of the chip.
Depends on wether this is a shared power supply with a blown rail fuse...actually you're the repair guy that should know that 😉
The number is the lot code - it will not matter for replacements.
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