[Johan van der Kallen]

Hi LeHe,

I want to sincerely apologise for my delayed response(s). I have finally received the keys to my first house after a 4 month struggle that was quite a roller coaster. My mind has been all over the place and all my free time has been going towards getting the house ready. It could be as much as a month before i have moved in and put my tinkering station back up.

When i got some more time i will look into your suggestions and post my results here. I want to thank you kindly for helping me find a possible cause.

Kind regards,

Johan

[Johan van der Kallen]

Hi LeHe,

It indeed goes into standby when the rca cable is shorted. How would one go about tracing a grounding problem?

@jacek1313 On the unit I tested for the grounding issue, there already is a non-original capacitor present on the pcb and this has not solved the problem. I have trouble finding out at what exact location on the diagram it is hooked up to though.

 

Kind regards,

Johan

 

[Johan van der Kallen]

Hi LeHe,

 

Thankyou for your response.

When switched on, there is a very quiet hum ever so slightly audible. When connecting an rca cable, it gets worse. Shorting the rca cable (which i presume is just bridging the inner and outer contact of the rca connector) the hum goes away conpletely.

Also, when i switch input channel, the speaker makes an incredibly loud popping noise. I don’t think it’s very good for the unit but i do not know how to prevent this.

After some more reading i found that the switch on the backside is not for switching between powerlink and rca input; they simply let you change the mode from left hand speaker to right hand. I fail to understand how this matters when only connected via a mono channel with an rca cable. Is this perhaps exclusive to the powerlink communication?

Anyway, what i found out is that both units do not go in standby when the switch is in the bottom position, only the top position. That’s why i thought the problem only happens in rca input, and not powerlink.

Hopefully this gives you some new info that could with thinking of a solution.

 

Thanks in advance,

 

Johan

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