Problems with HK Receivers

dlachman1023

Auditioning
Joined
Oct 19, 2006
Messages
6
Real Name
Doug
Has anyone had any problems with HK 335 or 340 Receivers going into permanent "Protect" mode which effectively kills the receiver. My HK 335 had some sort of issue after little over a year and the factory replacement (a 340) did the same thing after about a month. I have not had any electrical issues in the house and even have added a whole house surge protector recently. HK has been great to deal with, but I am baffled as to why I am having this issue - is it a HW problem or environmental? Any thoughts?
 

homthtr

Supporting Actor
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Sep 5, 2006
Messages
519
Real Name
Steve
Does the Amp Stay in protected mode even after disconnecting all the speaker wires from the back of the amp?

In other words if you disconnect everything, place the amp on your kitchen table and plug it in does it still stay in protection?
 

Roger D

Agent
Joined
Jan 19, 2005
Messages
39
I've had the HK 130 for almost 2 years and haven't had any problems.

I am having an issue where my center channel is very quiet with DTS, but I think that's an issue with my DVD player.
 

Steve Adams

Second Unit
Joined
Oct 20, 2001
Messages
432
common problem with H/K receivers, i know i have said this a million times...but the "hi current" H/K says is great, is actually bad for the units. when I was selling them I had a return rate over 60%. all effectively cooked from the hi current circuitry. send it back and get a replacement.
 

dlachman1023

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Oct 19, 2006
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6
Real Name
Doug
The units stay in protected mode when everything is disconnected. HK Tech Support said there could be a short happening with the speaker wires? I've got everything connected via banana plugs so I am not sure how that could happen.
 

dlachman1023

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Oct 19, 2006
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6
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Doug
I received another replacement receiver yesterday and hooked it up last night. Within about 10 minutes it died. The whole reason I bought the receiver was for its multi-room function - I wired speakers through out the 1st floor of my house. I have the multi-room speakers connected to a Sima speaker selector box which controls the speakers from room to room. I was testing out the speakers in the other rooms when it blew. Any ideas why this might be happening? HK has been a pleasure to deal with, but my patience is growing thin.
 

Ryan Leemhuis

Second Unit
Joined
Oct 1, 2002
Messages
490

Something seems wrong to me with what your doing or you have a short SOMEWHERE if you have gone through receivers that quickly. I own a 435 and have had no problems.
 

gene c

Senior HTF Member
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Aug 5, 2003
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5,854
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Bay area, Ca
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Gene
I've had an H/K 520 for 4 years and a 435 for 8 months without any problems. I must be part of the other "40 percent"! But I don't push mine too hard either. H/K does seem to have more "issues" than most other brands, but it sounds to me like the OP might have some other wiring problems as well.
 

dlachman1023

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Oct 19, 2006
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6
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Doug
I spoke with the HK Tech Supervisor and they are going to send me a 445 B stock unit. I am thinking about utilizing a second receiver instead of using the multi-room feature. The short seems to be there - both replacement receivers have fried after making adjustments to the speaker selector box. I'll just run some RCA connections between the two receivers to get the DVD and Digital Music from the cable box through out the house. It is getting too painful to try figure out where the short is.
 

dlachman1023

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Oct 19, 2006
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6
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Doug
My guess is that the speaker box is the problem. I got the box from J&R - the maker is Sima. The wiring connections are to terminal blocks which then snaps into the speaker box. I am thinking there could be a bad connection between the terminal block and the speaker box. This is as close to a root cause as I can get to.

At this point, having gone through 3 receivers I am probably going to use a second receiver for multi-room functions instead of risking destruction of a 4th receiver.
 

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