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Gear / Technical Help => Playback Forum => Topic started by: taosmay on June 14, 2015, 05:36:30 AM

Title: Non-working old Amp recommendation
Post by: taosmay on June 14, 2015, 05:36:30 AM
I have a Kenwood KA-8100 stereo integrated amplifier that is not working. Been sitting unused for who knows how many years. Think I bought it used in early '80's, and did use it for awhile. I do not see any listing for it at audiogon's audio bluebook. IMHO, it is a pretty to look at amp: silver front, big knob's and switches. Freakin' heavy. If someone (Clifton Audio?) could repair it, I doubt it would be worth the price. Any suggestions on what to do with it? Trash it? Make a museum shelf and display it along with my Sony D5M, D100 DAT, D3 DAT, SBM-1 (j/k, no room for that) ?
Title: Re: Non-working old Amp recommendation
Post by: mfrench on June 14, 2015, 09:43:47 AM
open it up, and have a look around for old leaking capacitors.  they show up, quite often, as wet spots around the bad ones.  if you can find obvious ones, they are not hard to pull and replace.
Title: Re: Non-working old Amp recommendation
Post by: twatts (pants are so over-rated...) on June 14, 2015, 10:53:30 AM
Someone gave me an ancient B&L ST-140 that didn't work...  I pulled the top, replaced (2) $0.29 fuses and thing works great to this day...

Maybe you'll have the same luck???

Terry
Title: Re: Non-working old Amp recommendation
Post by: OOK on June 14, 2015, 11:32:42 AM
I have a Kenwood KA-8100 stereo integrated amplifier that is not working. Been sitting unused for who knows how many years. Think I bought it used in early '80's, and did use it for awhile. I do not see any listing for it at audiogon's audio bluebook. IMHO, it is a pretty to look at amp: silver front, big knob's and switches. Freakin' heavy. If someone (Clifton Audio?) could repair it, I doubt it would be worth the price. Any suggestions on what to do with it? Trash it? Make a museum shelf and display it along with my Sony D5M, D100 DAT, D3 DAT, SBM-1 (j/k, no room for that) ?

Repair it...  You would be surprised how good it will sound compared to new equipment of today.  Older gear generally has a much warmer tone compared to todays electronics.  You just might find yourself using more and more.

Check the current ebay listings...  you might be surprised what you will find.


Peace OOK
Title: Re: Non-working old Amp recommendation
Post by: taosmay on June 14, 2015, 03:38:05 PM
Thanks for the suggestions. I pulled the top. All 4 fuses are intact. I did a google search for capacitor images, to find out what they look like... one has leaked/looks wet at the bottom. I cannot get it out though. I can wiggle it and rotate it a little, but it will not pull up and out. Don't want to damage the board underneath of course/not sure how much more, if any pressure to apply... It should be pulled straight up to get it out, right? From what I can tell it appears to be the only one that has leaked.

I searched for it on ebay. Was kinda surprised it was going for between $175 - $325. The high price point seller only says it powers on, no furthur testing done... yeah, mine powers on too, but when I put a load on it, nothing. His is here:

http://www.ebay.com/itm/KENWOOD-KA-8100-STEREO-INTEGRATED-AMPLIFIER-/281708003328?pt=LH_DefaultDomain_0&hash=item41971b0000

From his interior pic's, on mine it is the orange colored capacitor near center/lower that has leaked.

"Repair it...  You would be surprised how good it will sound compared to new equipment of today.  Older gear generally has a much warmer tone compared to todays electronics.  You just might find yourself using more and more.

Check the current ebay listings...  you might be surprised what you will find.


Peace OOK"

I kind of doubt it is as good or better than my current units, which I bought new in the late 90's - a McCormack DNA 0.5 Deluxe Ed Power Amp, and a McCormack Micro Line Drive. I do have a friend who needs a amp though, which is why I am attempting to get this one going.

Anyway, should I just keep trying to pull that leaked Capacitor up and out?
Title: Re: Non-working old Amp recommendation
Post by: twatts (pants are so over-rated...) on June 14, 2015, 05:21:54 PM


Anyway, should I just keep trying to pull that leaked Capacitor up and out?

It shoudl be soldered into place...  Don't pull it out w/o desoldering first...

Terry
Title: Re: Non-working old Amp recommendation
Post by: taosmay on June 14, 2015, 08:01:01 PM


Anyway, should I just keep trying to pull that leaked Capacitor up and out?

It shoudl be soldered into place...  Don't pull it out w/o desoldering first...

Terry

Shit...Didn't know it was soldered in place. It's loose all around the base now...I have never soldered or de-soldered anything. How does one de-solder a capacitor?
Title: Re: Non-working old Amp recommendation
Post by: mfrench on June 14, 2015, 11:35:05 PM
yeah, wow, sorry for the brevity in description.  I literally meant to look around, but not to "pull".  I blabber quite a bit on a forum where people know what they're doing. And, the brevity came from terminology that is understood there, and so typically in use, that it came out here.
Be careful around them. They can hold charge and shock the crap out of you, even when unplugged.  In something like a tube amp, that might be 400 volts DC, that might just explode your heart.
Title: Re: Non-working old Amp recommendation
Post by: taosmay on June 16, 2015, 10:23:48 PM
So I guess it is at least possible that I damaged this Amp? Time to take it to, or ship it to someone who knows what they are doing?
Title: Re: Non-working old Amp recommendation
Post by: bryonsos on June 17, 2015, 05:53:44 AM
So I guess it is at least possible that I damaged this Amp? Time to take it to, or ship it to someone who knows what they are doing?

Take it to Tube Dreams in Taos. I know a guy who speaks well of them after they brought his old McIntosh back from the dead.