How can i fix a burnt channel on a harman kardon hk 3270 Receiver

No, phones don't have an infra-red transmitter. That would only work if the HK was connected to wifi and HK made an app and the internal circuity and logic to accept it.

Contact HK direct and buy a new remote.

Or

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need a meter to check what circuit has failed

Disconnect speakers and wires. Bad wiring or defective speakers may be loading the amp down and causing the protection circuits inside to disconnect (no sound). If the HK is heating up (beyond what you perceive as normal) with no wires or speakers connected then you have a problem requiring expert repair.

The IC in it is fied for the left channel.

Check for a cold or broken solder connection inside the unit. The left and the right channels are almost identical circuitry. Compare the good channel to the bad one.

It looks more likely to have a problem with one of the relays or a 'cold' connection inside the unit.
Kostiko

I believe it is actually a memory capacitor that has to be replaced. It is soldered directly into the board and requires quite a bit of know-how to replace.

Hope this helps,

Thanks,

It will only display via component. Your HDMI firmware is either 1.1 or 1.2 and has HDCP issues (High Definition Copyright Protection) it's a firmware problem that has been fixed on all new receivers, not just a HK issue, all receivers! the new version 1.3a and 1.3b have fixed the issue. Unfortunately you cannot update the firmware on the receiver. Hope this explains it for you, sorry! Lot's of angry people out there!!! myself included.

The DSP board is defective. You need help from a HK tech

Sounds like a bad output channel is causing it to go into protect mode. Time to see a repair tech.