Question about Harman Kardon AVR 125 Receiver
My HK avr125 has no display and no functions except the input indicators and the surround mode indicators light up. There is no functions at all, I tried to reset the unit but that did not help.
I did find that there is no -30 volts going to IC74. My question is how is the -30 volts being generated at Q901.
Same problem. C901 on the vertically-mounted input board next to the power supply transformer was burned. Replaced with ceramic cap from RS with same specs. Still did not work. Talked to Jeb, great guy at HK tech support. He suggested that R901 would probably be blown and maybe 902 also. These are flame-proof resistors and do not show damage. Tested with multimeter and Jeb was spot on. Replaced 1w resistors with 5w (all RS had) at same resistance. Works great.
Posted on Sep 27, 2009
Hk 230 lost presets, erractic. will not power on goes off quick. . last time sprayed contact cleaner all connectors & bd. connections & it worked. A year later this time the same symtoms. switch on the module connects to transformer caused the receiver to reset. & lose all presets. it is a reset switch i also found out after i fixed it.. sprayed contact cleaner in switch that & it sings again. thank you to the person that suggested this in some site..mine is fixed!!!!
Posted on Mar 20, 2011
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Posted on Jan 02, 2017
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