Kenwood Supreme (500/600/650/700) informal user's group?
- Thread starter bjarmson
- Start date
Yet another Supeme 600 owner checking in
SN 620226.
Looking for some advice if possible.
My electronic expierence is extremely limited.
I believe that I could identify a bulging, leaking cap or a charred resistor and that is about it.
I opened the hood on my 600 and it is very clean with no obvious problems.
Assuming bias is set what is the minimum service work required to prevent any potential damage down the road?
In other words how do I preserve the unit as best as possible by eliminating any known or outstanding " death" or "suicide" issues or components?
SN 620226.
Looking for some advice if possible.
My electronic expierence is extremely limited.
I believe that I could identify a bulging, leaking cap or a charred resistor and that is about it.
I opened the hood on my 600 and it is very clean with no obvious problems.
Assuming bias is set what is the minimum service work required to prevent any potential damage down the road?
In other words how do I preserve the unit as best as possible by eliminating any known or outstanding " death" or "suicide" issues or components?
Daunia 70
Lunatic Member
Someone on Ebay from California selling the Kenwood 700M amp.
http://audiokarma.org/forums/index.php?threads/fully-restored-kenwood-700m.373706/
http://audiokarma.org/forums/index.php?threads/fully-restored-kenwood-700m.373706/
Tube Sound
Super Member
Got that right!
MM2017
New Member
Another Supreme 600 owner checking in. I joined AK just so I could share in this thread.
SN: 420131
Boss's neighbor put a large pile of boxes at the curb for the garbage man. I picked them up as it started to rain and loaded them into my trunk. Got home opened everything up (the weight of the box should have told me something) and have been loving it ever since. This amp really opened up a new hobby for me and I am grateful.I have original box/warranty info/owners manual, the original owner was stationed in Hawaii and bought this there. I am a total believer that there are not that many of this Supreme pieces in circulation and feel fortunate to have stumbled across this one.
Question, opened it up and everything looks great inside just a little dust (think it spent much of its life in the box). I play it approx. 15 hours a week with no detectable issues. Is there any recommended service at this point? Should I have a tech check values, etc.?
Thanks again!
PS; also picked up on same curb a separate box including wooden case for the 600 ( mint as well) and a Pioneer TX-9500 II in box (with all associated literature).
SN: 420131
Boss's neighbor put a large pile of boxes at the curb for the garbage man. I picked them up as it started to rain and loaded them into my trunk. Got home opened everything up (the weight of the box should have told me something) and have been loving it ever since. This amp really opened up a new hobby for me and I am grateful.I have original box/warranty info/owners manual, the original owner was stationed in Hawaii and bought this there. I am a total believer that there are not that many of this Supreme pieces in circulation and feel fortunate to have stumbled across this one.
Question, opened it up and everything looks great inside just a little dust (think it spent much of its life in the box). I play it approx. 15 hours a week with no detectable issues. Is there any recommended service at this point? Should I have a tech check values, etc.?
Thanks again!
PS; also picked up on same curb a separate box including wooden case for the 600 ( mint as well) and a Pioneer TX-9500 II in box (with all associated literature).
MM2017
New Member
Thanks for your input. I too could not believe that this guy held onto this for over 30 years only to pile it all at the curb, with a heavy rain storm coming to boot.
gort69, is this the type of work any competent technician could do or should I source out an individual who has experience on vintage Kenwood equipment?
gort69, is this the type of work any competent technician could do or should I source out an individual who has experience on vintage Kenwood equipment?
I would think that any competent repair tech familiar with vintage audio could set the bias and the offset, as well as overhaul the power supply. But wait for someone who knows more than me to reply - I only have experience with mine, which had a couple of dried/crumbling caps as well as a couple failed regulator transistors (which run wicked hot on these) on the power supply, and as such was inop. The good news is that the power supply board is the one (only!!) board that is easy to access on these (one screw).
I believe these are also known to frequently have leaking filter caps and there may be other common issues that should be addressed as a minimum.
Ps - Hard to tell from your photo - is that an original wood case? Looks a bit big side to side
I believe these are also known to frequently have leaking filter caps and there may be other common issues that should be addressed as a minimum.
Ps - Hard to tell from your photo - is that an original wood case? Looks a bit big side to side
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The Model 500 and 600 both have a very high failure rate for the four big caps. Pop the bottom off and look for signs of corrosion around these suckers.
The regulated supply is a busy little bastard on this amp, but at least it pops right out of a computer style edge connector.
The regulated supply is a busy little bastard on this amp, but at least it pops right out of a computer style edge connector.
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