Peavey KB 60 Help!

[km6xz]

The KB60 is a rugged, standards based amp that used commonly available parts. It can be repaired by almost any competent tech and should last for years of trouble-free operation. Get it repaired, a very old KB60 will outlast a new Behringer K1800FX. 20 years from now the KB60 could still be repairable because of using standard electronics parts. Most newer amp with modern features will not be repairable in 20 years or even 10 because they depend on custom limited production ASICs and programmed processors that are only made as long as the production run lasted. Anything that derives it sound from digital circuits is useless when the manufacturer runs out of old stock of single source parts. Think of them as they were designed to be, to be disposable, lots of functionality will they work and landfill when they don't. Home many parts are available to repair your 6 year old cell phone is a good way of putting it into perspective.

I would be surprised if there was a labor charge of more than one hour bench time, probably $65-75 for labor plus whatever the parts might cost.

[Jazz P Bass]

Peavey KB60 Schematic

Here is the schematic.
Take it with.
These amps are really (relatively) easy to repair.
The trick, as mentioned by Enzo, is to 'isolate' the problem.
That can be accomplished by using the external jacks.
Pre EQ Patch: the signal coming to this jack can be monitored to see if the initial amplifying stage is good.
(a signal can also be inserted here to bypass the front end of the preamp)
Preamp Out: signal send to another amp: if that sounds good, then the preamp is good.
Power Amp In: a separate signal source is utiized to drive the KB 60 power amp section: if that sounds good, then the power amp is good.
There are Ic chips on the circuit board.
They require a steady + & - 16 volt supply.
It must be free of any Volts Ac ripple.
This can be measured once the amp is opened up.

[DarylWise]

Ok then. Thank you.

[g1]

I'm a bit confused, Triv's is not a Peavey repair center but a TV repair place in Pennsylvania? I thought you were in Triadelphia?

[DarylWise]

According to Peavey's website, it is a Peavey Certified service repair center and according to the website it is the closest one to me.

[g1]

Ok, sorry, I didn't see them under Peavey service at first. You seem concerned that they may not be able to fix it. I see they are primarily a TV repair place. The second nearest place to you (Tonetronix) deals with music equipment, so they may have more experience with instrument amps. May be call them both and see what their rates and turnaround times are like.

[DarylWise]

Well, don't think of it like I may be thinking it to be unfixable, my mindset is on it's age. I feel they may not be familiar with 80/90's amps. But, I'll just wait and see. I've tried calling them. No one answered. I'll try again later.

[Jazz P Bass]

There was a feedback that I read about Triv's.
"Hard to reach."
Apparently that is true.

[DarylWise]

I'm not surprised. And usually, establishments like that have a voicemail setup. There place has a robot saying I have reached the number and to leave a message at the beep. None of: "You have reached Triv's Electronics, please leave a message!" It makes you feel like your calling someones house!

[DarylWise]

Well, nevertheless. I did still pay $20 for the Peavey Funk Out Cleaning spray. So according to the pictures I posted on my OP. What do I apply the cleaner on?

[Enzo]

Age is no issue for a technician. You may think of this amp as old, but 1980s and newer amps are hardly old. I work on amps from 1938 if they come through my door. That is older than I am, though not by a lot.

[DarylWise]

Just contacted Triv's. There is a $20 service fee along with the cost of repairs. I have a feeling I might have to walk in there with at least $100. The guy said I would have to leave the amp there? As if it would take a few days?

[DarylWise]

I just contacted Triv's. There is a $20 service fee along with the cost of repairs. I have a feeling I might have to walk in there with at least $100. The guy said I would have to leave the amp there? As if it would take a few days?

[Enzo]

I try to accommodate out of town customers, but most shops can't drop what they are doing and do while-you-wait repairs. But it is reasonable to expect them to be able to plug it in while you are there and at least assess what they think is the problem area.

[DarylWise]

I just hope I can afford this repair and still have some money left over from my check! Hell, I hope I have enough on my check for the repair itself! LOL!