Technics SU-V1X One channel a bit quiet?

[NivagSwerdna]

My treasured 1986(?) Technics SU-V1X amplifier (bought with my first pay check) seems to be slightly playing up with one side a bit less responsive than the other.

Does anyone have the SU-V1X Service Manual?

Thanks in advance

 

[slimecity]

Try here: http://www.manualscenter.com/manuals/technics/suv1x-service-manual.html#.WH6iFU27oy8

Free site hifiengine doesn't have a copy of the SM - you will probably need to pay $5US or so at the above site to get it.

 

[NivagSwerdna]

OK. I was hoping for a free one. I also found a hard copy on EBAY for $10-ish.... not sure which would serve me better.

 

[slimecity]

Yea you can try but cant say I've heard of this particular technics amp - so it may be rare and not many people own them, let alone have a SM.

I'm pretty sure I've used manuals centre before, and they were fine. Instant download too. $5 seems OK to me! I've had to pay around US$25 for some manuals!

 

[SVI2004A]

Checked / cleaned contacts in input switches / loudness sw / tone defeat?

 

[BTSs]

Checked / cleaned contacts in input switches / loudness sw / tone defeat?

Would be my first move.
I`m surprised how many bits I have been able to revive with a bit of cleaning.

 

[NivagSwerdna]

I haven't done the basics yet. And definitely a switch clean sounds sensible. Although the volume control and balance knob seems a bit scratchy I'm not sure if that's quite it... early days in my investigation.

 

[Binkman]

greetings;
Good news is it's working.
"Scratchy" is a usual sure hint. Your unit 'pots' may have come with 'pot grease' and has dried or caked up. deoxit5 or something with lube and sparingly clean probably a couple times. Usual precautions as let unit sit and discharge a while. Any interconnect wire connectors may need a shot of contact cleaner. Might also inspect your speakers and wires and clean rca jacks. Post picks if you see anything unusual inside.

bink