lost one channel on an old Onkyo amplifier

On Monday, August 10, 2015 at 7:47:12 PM UTC-5, dansabr...@yahoo.com wrote:

On Monday, August 10, 2015 at 6:47:54 PM UTC-4, jurb...@gmail.com wrote:
"P.S. I have NOS STKs available if the ones listed up thread are accurate. "

Do you happen to have an STK0100 II and if so, how much ? I am already fitting one into a Fisher CA-800 that used to have 0080s in it. The one I got I know is NOS. It might be nice to do both at the same time because I have to do some things to the heatsink because the 0100 is bigger.

I have (2) STK0080II and (2) STK0100II available.

Dan

How much and how far are you from Cleveland, Ohio ? I'll have to see if the guy ants to spend the bucks as well. Hopefully you don't wnat so much for them we have to put the money in escrow. I have had good luck with people on Usenet so I wouldn't mind trusting and just sending you a postal money order. (they are not forged because there is an 800 number you can call to verify them) I don't have a Paypal account but I know someone who does if you have to be paid that way.

 

>"There was much rejoicing! "

My cohort and I sometimes buy used scopes from this surplus place on the east side. (I know most people don't mention that but us old west siders do around here)

Got a couple of pretty good deals, not extremely great scopes but usable for audio and a few other tings. Anyway, then people don't really know scopes ad we found that some of them, THEY don't know how to get a trace on them. Like setting them to auto trigger, or free run if it has it. Picked up a nifty Tek 422 with the battery option. I intend to replace the batteries with more modern ones but I am sure I am going to have to build the charging circuit. I might see about an of the shelf solution or possibly get the circuitry from an old laptop. I would hav to probably cut part of the motherboard or something, if that is even possible, and then most likely regulate the 19 volts down to 12, pretty sure it is 12.

And we got a Tek 7834 that used to cost more than a house for like $24. That tone however has a slight HV regulation problem which I will eventually get to. the main worry about that is that it is a big HV divider resistor. but then modification is my middle name for a reason. There is almost always a ay, andf the other surplus place (slightly farther, they are on the west side of the next place)has kagillions of old resistors, probably of every value ever made. And I mean 100.1 meg, 100.2 meg, you know. OK, I am exaggerating, but not that much.

 

"Now if there had been a sensible warning light on the front panel you
might have noticed earlier... "

Things like that irk me. YEARS worth of Tek stuff with no power light. Some have a little window that opens to reveal a light colored piece of plastic.. Ridiculous. Same with these older Wavetek generators. Muy biddy has a 103 and I have a 111, they also lack a power light.

Can't even tell if the thing is plugged in, and that is important sometimes, depending on how your bench is set up. If you are out in the field it is even worse.

Don't pick on our old equipment, at least it doesn't run Windows !

 

[MJC]

In article <3mpp9c-ath.ln1@coop.radagast.org>, dplatt@coop.radagast.org
says...

I gave myself a slap on the wrist for not resetting it to normal
operation after the previous usage... and breathed a sigh of relief
that I'd discovered the error before I went all the way home with it.

Now if there had been a sensible warning light on the front panel you
might have noticed earlier...

Mike.

 

Try the fuse. I had same problem on a 80s TX 2500. It was one of the fuses. Replace both.

 

[John-Del]

On Thursday, April 2, 2020 at 3:14:58 PM UTC-4, mcurr...@gmail.com wrote:
> Try the fuse. I had same problem on a 80s TX 2500. It was one of the fuses. Replace both.

Almost 5 years ago. I suspect he either repaired it, had it repaired, or scrapped it by now.

 

[John-Del]

On Thursday, April 2, 2020 at 3:14:58 PM UTC-4, mcurr...@gmail.com wrote:
> Try the fuse. I had same problem on a 80s TX 2500. It was one of the fuses. Replace both.

That was 5 years ago. Also, he said it was just the balance control mistakenly rolled over to one side.

 

John-Del wrote:

That was 5 years ago. Also, he said it was just the
balance control mistakenly rolled over to one side.

________
If so, then the only issue with this amplifier was lack of basic trouble-shooting.

 

[Tim R]

On Monday, April 6, 2020 at 12:41:42 PM UTC-4, thekma...@gmail.com wrote:

John-Del wrote:

That was 5 years ago. Also, he said it was just the
balance control mistakenly rolled over to one side.

________
If so, then the only issue with this amplifier was lack of basic trouble-shooting.

I'm still here, the Onkyo still works, at least as of last night.

Annoyingly, now moving the volume control causes some fuzz and one speaker drops out, but usually comes back with a few rapid twists. But the sound quality is good.

 

[pfjw@aol.com]

On Tuesday, April 7, 2020 at 10:52:42 AM UTC-4, Tim R wrote:

> Annoyingly, now moving the volume control causes some fuzz and one speaker drops out, but usually comes back with a few rapid twists. But the sound quality is good.

Lack of basic troubleshooting, and, apparently, basic maintenance.

Clean the controls, starting with the VC, then all other pots and switches. Should be good for another 5 years after that!

Peter Wieck
Melrose Park, PA

 

[Ron D.]

Just don't get bit by the intermittent fuse. I got bit 2x. Test fuse with ohmmeter. Fine. Put fuse in circuit. Circuit doesn't work. Test voltage across fuse-120V What? Had schematics.

Fuse was bad.

Device was a Decwriter II 300 baud hard copy computer terminal. We had changed most of these fuses to circuit breakers.