Kenwood KR-V7070 schematic-keeps switching off

[Lino]

Hi
would appreciate schematics or any help with a proble with this unit...it
seems to switch off (hear relays clicking) momentarily then on again when in
use

cheers
Lino
--

 

[Sofie]

Lino:
A schematic will not be of much use to you..... there are no step by step
troubleshooting instructions and there certainly is NOT any instructions
that specifically address your troubleshooting question. A schematic is
only most useful to an experienced and knowledgeable tech with the proper
test equipment, tools and replacement parts. In fact, most shop techs fix
most equipment without the hard to find schematics and service manual..
First..... disconnect ALL the speakers from your Kenwood and try a set of
headphones instead..... if it still switches off and on then you will know
that the problem is not due to faulty speakers or speaker wiring.
Stop running your Kenwood until this gets fixed..... continuing to use it
with this problem is courting disaster to the point that it won't turn on at
all and more expensive parts mail fail.
The symptom you describe may be caused by faulty or leaky semiconductors,
electrolytics, etc..... but also can easily be caused by dry, cracked, cold
solder connections..... especially near and around the high heat producing
components such as power resistors, transistors, diodes, etc. Look also
for loose grounding screws on the pcb and on the rear jack panels.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
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"Lino" <savvy@hotmail.com> wrote in message
news:bgft0a$ksu$1@enyo.uwa.edu.au...

Hi
would appreciate schematics or any help with a proble with this unit...it
seems to switch off (hear relays clicking) momentarily then on again when
in
use

cheers
Lino
--