peavey es-12pm

[clydey]

can anyone help with a schematic for a peavey es-12pm powered monitor.
i have had no reply from peavey in last 8 days cheers

[Enzo]

REally? Did you call or email? And was it to "customer service"? They are usually responsive.

I cannot find that model in my dealer support files. Is that the complete model name from the serial number tag? CLosest I see is SSE-12M. and that is not powered, so it isn;t yours.

Are you in the USA or elsewhere? Some export models are not available here.

[clydey]

yes i e-mailed customer service europe as i am in the uk
it is an old model (my own)
i will try ringing them thank you

[Enzo]

Try contacting customer service at Peavey here in the USA.


Let's approach it another way. What is wrong with it, what needs fixing? A powered monitor would have a power amp and some sort of input. Input could be nothing more than a jack and maybe a volume control, or there could be some basic preamp.

If the power amp is the problem, look on the circuit board for a type designation. Printed in solder on the solder side of the board. It might be something common like a 260C board.

[clydey]

yes i will try peavey usa.
i have not opened it up yet as i thought id get the schems first and no hurry.
1.the monitor has slight distortion on the sound (like a torn speaker)
2.the control panel heats up (thermal runaway) until the red power light goes off. switching off and cool down and then same cycle (on for about a minute)
i suspect the outputs are failing and also thought that the filters could be suspect but have not opened it yet as i thought id get the schems first
thanks for the reply

[Enzo]

There are some things a schematic won;t tell you. AMong those are: the speaker is burnt out, and shorting across the amp output.

Disconnect the speaker and let the amp run with no speaker for a while. Does it still get hot? If it still heats, then a problem for sure, but if it stays cool, then the speaker may be at fault.

COnnect the speaker itself to some other amp - does it work and sound OK? You mentioned distortion sounded like a torn speaker - so check the speaker.

Obviously I cannot see the amp, but in my experience, failing outputs don;t usually make the symptoms you describe. If anything, it sounds like the outputs are working but being driven too hard or are overbiased.

if you can identify the board, I might have the schematic already under other models.

[clydey]

ok thanks for that will do it today.
off topic but:
noticed on another post you worked in the gaming
i was a bench engineer in the seventies.
i also repaired the (ttl 74 series )bat and ball games (choice of 3 games)
then repaired the midway space invaders (the next series on)
table tops.,rockola jukes,pinballs (electro mechanical and solid state)
galaxian z80 based along with all the mods (donkey kong etc)
i should have done the amps (as a guitarist) but made the mistake of becoming an operator and repairer (fruits,jukes and pool tables)
it would be interesting to know how you went from the coin ops to the amps.
for me i have always had the elecrical trade but getting older i am drifting back to the amps (but not for monetary value more of from where i started).
got out of gaming in 1995 nearly bankrupt.
thanks for the interest in my post

[clydey]

the board is marked sn 40082 on both sides.
it is about 4 inches by 10 inches driving a 12 inch 8 ohm speaker and a 8 ohm 150 watt tweeter.
the 2 output transistors are 2n3772
there is a scorch mark where r13 used to be but now gone.
smaller board houses the jacks , coil, 2* 7watt 18 ohm resistors and a cap marked 2.2k 100 volt
without the speaker and tweeter connected the heatsinks are still in thermal runaway.
dont know value of r13
is this enough to identify the schems cheers

[Enzo]

Sorry, that number isn't connecting for me. I was hoping to see 260C or 100H or some such. I suppose it was a board made just for that model then. It is very unusual for Peavey to have component numbers screened on the board.


Actually I was into amps first. A pal of mine, who was also a musician - the guy has played trombone behind the Temptations at Madison Square Gardens even - was managing the coin company. No idea how he got there. He knew I was a good sound man and top notch roadie, and he needed a good field service guy, and he figured I'd be a good one, resouorceful and all. SO he hired me. And I learned the games. I had been a pinballer for years as a player.

I got into that in the 1970s before digital hit. Learned all the relay logic. Then learned digital on the Pong boards. As videos grew I had to learn the microprocessors. yeah we had a lot of the Midway board set games. Then the pins all went digital in 1976. Full service company, we operated everything, we even had a laundry division. Currency changers for those locations.

I was head technician pretty quick, and started training techs.

Now i am back into audio. Still a little active in the coins. I got a stack of 20 some Pac Man boards here needing rebuilds. Got a guy who wants them when I can get to them.

[clydey]

cheers for the help
we used to do packman on the galaxian as an eprom change
i think it was 5 *2732 and some extra ram.
i think i remember the dedicated pacman boards - were they a double board layered setup.
whats your veiw on the audio side-i am not new to workshops but lacking in amp familiarity but set on becoming an amp tech valve and solid state.
a few guys have impressed me on this forum both by their experience and patience and i will add what i can
for me i have been buying all the basics variac ,isolating tx, siggy, pace desoldering station etc
and visiting the forums to gain knowledge. ie mosfet fault finding - sometimes no scope ground- that sort of thing
in the coin side i had all the rigs you could imagine
one for each type of fruit
most ss pinball rigs
nsm german jukebox rig
to name a few
just cannot go back to it - no interest for me
cheers will contact peavey as it has peavey sig etched on soldered side
.

[Steve Conner]

This?

Compact stage wedge monitor loudspeaker. Free data sheet by GB Audio

[clydey]

yes thats it
ive had it along time just chasing the schematics
cheers

[clydey]

just phoned peavey uk
they have schems and are going to e-mail them to me
cheers

[Steve Conner]

That's what I was hoping... Since Enzo never heard of the thing, I guessed it must have been made at Peavey's European plant in Corby. I've seen quite a few Peavey speaker cabinets here that say "Made in UK" on them.

[clydey]

yes back plate says assembled in uk along with peaveys corby address
never associated that with the non UK
cheers