HK AVR25 MKII goes on and off numerous times on cold power up
When I turn on my HK receiver it turns itself on and off numerous times. This only happens on a stone cold powerup and only the first time I turn it on each day. Once it stops switching on and off it works just fine. It turned itself on and off 154 times today before it began working. Once it is working, if I then turn it off and turn it back on, it works fine. HK said it could be shorted speaker wires and the receiver is going into "protect" mode but I doubt this. The speaker wires aren't moving around. If there was a speaker wire short somewhere that wouldn't fix itself each time I turn it on. They also suggested that it is overheating but it only does it when I turn it on when it is at room temperature. The only other suggestion HK gave me was an "internal" problem which likely will cost more to fix than a comparable new unit.
Re: HK AVR25 MKII goes on and off numerous times on cold...
The relay on the PWR SUPPLY board clicks once when the PWR switch is turned on then 2 to 5 sec. later it clicks again and 'off' it goes.
The small transformer ( standby power) on the board appears to be leaking crud (looks like wood glue) all along one edge.
Can I bypass this relay to see if the power transformer is 'ok'?
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There may be a short on the output side. Try disconnecting all the speakers on the back of the amp. If the unit stays on after that, turn off the amp and carefully reconnect one speaker at a time. Try turning on the amp after each reconnection. This might isolate any shorts that might exist.
Nope. You get one component OUTPUT (monitor) and two component INPUTS (Vid 2/DVD) but no HDMI video output.
If you can input and switch HDMI video directly at your display from your cable/SAT etc. you should be fine, just run all the audio through the AVR-25 through the coaxial/optical digital inputs, L/R analog RCA or the 5.1 direct inputs.
turn unit off using main power button, hold down t-mon and cd buttons at same time as switching main switch on should power up and show reset on the display for a short time then dhould go to standby this has reset unit and should now be ok
Can say I've seen this on a H/K. First swap the speakers left to right and right to left if the sound is low on the same speaker its the speaker not the receiver (could have a driver out). Could also be a dirty output relay.
Is the sound good other than it being low?
Is it that way with all inputs?
If the display does not turn on, then you have a power problem. The unit is not completely turning on. Since you opened up the unit, give it a sniff test to see if there is any burnt odor inside the unit. Check the fuses also. Have a look at the transformer board. It may have several fusible resistors sitting high on the board. If they burn open, there is no power to the display/cpu board.
I would recommend shopping for a new receiver. Sounds like there is a relay, capacitor, and or power supply problem that keeps causing damage to the circuits which if continues could cause speaker damage and issues with equipment that you have hooked up to it. But if you choose to have it worked on again, i recommend purchase of a UPS (uniterruptable power supply) that is capable of regulating to voltage.
Turn the reciever on for a second or two and then off before the protect mode shows up on the monitor. Repeat this step about five times and check to see if the reciever does not go into protect mode. If it does go into protect mode try it again. Dont know if this is the proper way to fix the reciever but it worked for me. Good Luck