pioneer hi-fi problem, please help!

Guest

Hello,

I am learning to repair electronics as my hobby, but unfortunately, I am now stuck with a problem and would really appreciate if someone could help.

I am trying to repair a Pioneer X-HM20 DAB Hi-Fi system where when I plug it in, the relay switch on primary part of PSU keeps clicking.

It clicks to connect, waits for about half a second, then clicks off and immediately clicks to connect again hence I can't manage to even bring it to standby mode. I think I need to also mention that it clicks as soon as I turn the power on at the socket unlike my other equipment which seems to charge up first before switching on, but perhaps it is by design. I bypassed the relay and the system still doesn't come on, the timer light keeps flashing.

On the output connections, there are 5V and 8V DC which read near same voltage, but there are two 12V connections which read 14.5V and 28V. The 28V drops down to 18V when connected to main PCB and the above mentioned 5V also drops to 4.6V. The others stay the same.

Can anyone help please?

Thanks.

Guest

Hey

I have exactly the some problem of you, I try desoldering the relay and to by pass the contact but That don't really work because the relay need one self-holding to fuctionning. Do you solve your problem if yes, how?

Waiting for your answer, kind regards Luc (from France).

Guest · Posted: Sat Feb 09, 2013 2:48 pm Post subject:

Hi. Just found out that it is not actually the power supply that is faulty. Swapped it for another one from a working stereo and still it does the same. Tha fault is somewhere on the main PCB. Will look into it further.

Guest · Posted: Sun Feb 24, 2013 4:28 pm Post subject:

Hello do you find some thing new? Not in my side.
Regards
Luc

Guest · Posted: Fri Mar 22, 2013 9:10 am Post subject: It's working

Just for info, remove the battery inside remote control unit and start X-HM20
by using the touch in front of device and not with remote control unit.

novvac · Guest

Hello I have the same problem with this.

Is there solition for this ?

THX
Vaclav

Sokk221 · Joined: 13 Mar 2017 Posts: 2

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Montales · Joined: 03 Jul 2017 Posts: 1

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jtbeck · Guest

kfc55 · Joined: 01 Dec 2017 Posts: 1

Hi, I have the same problem with this.

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