Re: Harman Kardon AVR 3700 blown standby power supply



Hi Jason
I need some suggestion in troubleshooting my receiver. I don't have any signal generator or Scope to check the transformer, but I have ordered a new TF91 from US harman Kardon. Shall I go ahead and replace the IC91 and zener to try it out before receiving the transformer TF91 by shipment. (I do have several IC91 chips so no worries if it burns again). Any suggestions will be greatly appreciated.
Prabhu...

Re: Harman Kardon AVR 3700 blown standby power supply

Hi
I'm also having similar problems with avr3700 PS. It is totally dead with IC91 burnt.
I'm trying to order parts from HK International in US and their email ID is [email]hcgcustomersupport@harman.com[/email]
I'm still in the middle of troubleshooting and found the Zener diode D928 is short. I'm thinking of ordering the TF91 transformer as previous post's I have read seems to have this transformer problem.
I'm in Canada and trying to order parts from US.Re: Harman Kardon AVR 3700 blown standby

Re: New Members - please post your introductions here

Hi, I'm new to this forum and interested in some trouble shooting with electronic devices.
I have a problem with my AVR 3700 HK receiver and I saw some posts with exact sample problem as I have, and hence I joined the group. I hope with some of my background knowledge and through referencing the forum I will be able to solve my problem. Thanks