HK AVR 1700 No audio or video through HDMI ports

[freethink]

Hello, I have a Harman Kardon AVR 1700, and the HDMI ports have seemingly stopped working. The analog inputs still work fine. I downloaded a service manual for it, but the trouble shooting section really doesn't address this at all. I do have a DMM, but don't really know where to start. I'm thinking maybe the whole HDMI board may be dead, but i would like to confirm that before I get a replacement board for it. Any help would be much appreciated.

[mmartell]

Re: HK AVR 1700 No audio or video through HDMI ports

Could be benign as an open filter starving a critical voltage but more likely a bga failure. Try heating the board thoroughly with a hair dryer to see if that changes anything. Then try hitting the dsp ic with a heat gun (not a reflow unless your sure that's the problem) if the first test fails

[Khron]

Re: HK AVR 1700 No audio or video through HDMI ports

... Or, even simpler, dead caps on the power supplies? Some series of Onkyo receivers had this "disease" - quick recap of the HDMI board fixes the issue

[tibimakai]

Re: HK AVR 1700 No audio or video through HDMI ports

Nothing spilled on the board?
I have a HK1700, with this issue.

[mikay786]

Re: HK AVR 1700 No audio or video through HDMI ports

Not sure on your particular model but on my hk avr 255 there was a official mod done by service centre to sort out hdmi issues. It involved putting in higher rated fuses and a bridge cable from the hdmi board.

http://postimg.org/gallery/2ro6paqma/