tortajad@sunny9.DAB.GE.COM (Robert Tortajada) (05/16/91)
Can someone offer a good source of information about stereo repair. I have an Amp that always blows the two fuses after the transformer. I would like to fix it myself but know little about troubleshooting tecniques. I am an EE so I don't need a very basic book, just some hints and such. The Amp is a Harmon Kardon HK-660(?) in the hopes that someone might have a repair manual for it. Thanks for your help. Bob
zahid@oakhill.sps.mot.com (Zahid Ahsanullah) (05/17/91)
In article <1991May15.175812.25749@ge-dab.GE.COM> tortajad@sunny9.DAB.GE.COM (Robert Tortajada) writes: >Can someone offer a good source of information about stereo repair. I have an >Amp that always blows the two fuses after the transformer. I would like to fix >it myself but know little about troubleshooting tecniques. I am an EE so I >don't need a very basic book, just some hints and such. > >The Amp is a Harmon Kardon HK-660(?) in the hopes that someone might have a >repair manual for it. > >Thanks for your help. > >Bob A good start would be to chunk the output power transistors of both channels. Normally this is what would make the fuse blow. After making sure these are blown, plug in any 5 amp complementary pair. You don't need to put in the exact same kind if it's not available and don't worry too much about eqivalents if it's a hassle. I don't know of any books out there that might help you. As with any electrical equipment, please be very careful of electrical shocks and shorts. Things might blow up sometimes when the power is turned on so be careful. As usual, use this advice at your own risk. Regards Zahid