Harman Kardon AVR-335

[tony626]

I have a HK AVR-335 and can barely turn up the system without "PROTECTION" coming on and turning off the receiver. Is there a way to turn this off? I am using it with JBL SCS 200.7 speakers. Maybe that's the problem.

 

[sdy284]

I have a HK AVR-335 and can barely turn up the system without "PROTECTION" coming on and turning off the receiver. Is there a way to turn this off? I am using it with JBL SCS 200.7 speakers. Maybe that's the problem.

i was running into this problem alot with my avr230 and it ultimately came down to a damaged speaker being the problem. My advice to you is first check all speaker wire connections & make sure none of the wire is touching anything it shouldn't (like the + touching the - or either touching the reciever chassis). Either of those two things could cause your reciever to go into protection mode. I would think the problems would be in your speakers/their connections & not with your reciever, i mean its possible, but not as likely

 

[macersl]

Is there anything sitting on top of the receiver?

Overheating possible?

 

[j_garcia]

Sounds like a shorted wire or damaged speaker. I'd follow sdy284's advice and check all your speakers and wire connections.

 

[tomd51]

This behavior is identical to a problem my brother called me on just the other day with a Denon 2802 I'd given him. I myself had seen this before a couple of times and I could always attribute it to one of three things:

1. The speaker wire connections (bare or banana plug) had come loose from the receiver, speaker or speaker wall jack and the volume was at a mid-to-high level (-30 or lower). This makes complete sense as the receiver is attempting to push this amplified signal to a speaker that is no longer part of the circuit or connection, so there's nothing on the other end to disperse the signal.

2. The subwoofer out cable connection had come loose from the receiver or subwoofer input. Almost identical to #1.

3. Gauge of speaker wire being used cannot faciliate the amount of power being pushed to speaker. During some preliminary testing of speaker placement, I temporarily used a 20 gauge wire to my surrounds. After some time, I'd forgot to switch them out for the 14 gauge and during some close to reference level listening, the receiver kept popping into protection mode . The best analogy I've ever heard on this topic was to try blowing air through a straw. When using a somewhat larger straw, this becomes rather effortless. Conversely, imagine using a smaller straw and think of how much harder you'll have to work to pass the air. Similar concept when using smaller gauge wire.

The first and second issue are quite likely if you have recently been moving components around (sub, receiver or other), all it takes is a loose or broken connection. In my brother's case, he guaranteed me he hadn't moved the receiver as of late, swore up and down (in addition to the other swearing... ). Come to find out, one of the banana plugs had come out of the wall jack connector. Always make sure your connections are nice and snug, good connectors can make a big difference.

Good luck! -TD

 

[bigbassdave]

i would try disconnecting one speaker from the back of the receiver at a time. my friend had this same problem with an onkyo receiver a year ago. We disconnected the wire from the receiver one speaker at a time until it worked. Then we connected them again being EXTRA careful not to have any wires touching ect.. It has worked fine ever since. One more thing, looks like lots of HK owners are having problems with their amp going into protect mode when the volume is cranked. One of our members (chuck) had a great idea of using computer fans to cool the receiver. I would try that if the wires are not the culprit. For now just be sure to have at least 3" of clearence on the top and the sides so that it may breath properly. Good luck

 

[korgoth]

i would suggest more than 3 inches.. hk's are known to run hot, but their heat sinks work well so it shouldnt overheat that easily..

you should put clearence on both sides, and probobly at least 5'' on top.

everything else was already mentioned. check speaker wire connections, and speakers.

 

[Christopher]

H/K Avr 235 problems

My H/K Avr235 cut out while my son was playing his xbox. Every time I tried to turn it back on it went into Protect mode. I removed all the speaker wires and the sub woofer and it still goes into Protect mode. I just bought it a month ago and it has been working fine.