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Author Topic: Peavy 130 Special needs some TLC  (Read 763 times)

LoveChet

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Peavy 130 Special needs some TLC
« on: July 10, 2020, 09:01:53 AM »
I just obtained a free Peavy 130 Special beside the road however they must of trashed it for a reason.
I'd like to get it operating. I fix my own Deluxe Reverb tube amp but havn't tried to fix a solid state amp.
I was an electronics tech by trade way back and know transisitor theory, NPN,PNP sensitive to tests etc.
I checked out the components and all appear good, ie no burned resistors etc.
The speaker looks good but its disconnected but not sure where to connect it.
I also assume it had a reverb tank but its missing (four pins in center of psb I believe)
Where do I start

Thanks in advance

Gary from Western Mass

Jazz P Bass

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Re: Peavy 130 Special needs some TLC
« Reply #1 on: July 10, 2020, 12:09:48 PM »
Here is the schematic.

Enzo

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Re: Peavy 130 Special needs some TLC
« Reply #2 on: July 10, 2020, 02:26:39 PM »
Wire a plug to the speaker and plug it into the SPEAKER jack on the rear panel.

test the speaker with a 9v battery.

Reverb pan is 4EB2C1B.  or equivalent.

LoveChet

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Re: Peavy 130 Special needs some TLC
« Reply #3 on: July 10, 2020, 04:40:12 PM »
My main concern was whether or not I should fire it up without doing any tests on components so that I don't burn somehing out.

If I can fire it up I will just attach a spkr plug and pliug it in back Either jack I assume is ok.

Will it operate without or should I operate it without the reverb pan hooked up ?  I dont know but maybe its ok to operate without but you just wont get any reverb.


Enzo

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Re: Peavy 130 Special needs some TLC
« Reply #4 on: July 10, 2020, 06:15:50 PM »
It doesn't care about the reverb.

Look up "light bulb limiter" and make one and use it.

LoveChet

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Re: Peavy 130 Special needs some TLC
« Reply #5 on: July 10, 2020, 07:09:01 PM »
Whats the deal with the talk about the internal speaker.
They say if the internal spkr is connected don't plug in àn external.
Spkr else could fry power transiators.

LoveChet

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Re: Peavy 130 Special needs some TLC
« Reply #6 on: July 10, 2020, 07:13:31 PM »
It wants 4 ohm load so I assume that the internal (on board)
Spkr is 4 ohm. So if the spkr on board is 4 ohm I can just use that
And be done.

Enzo

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Re: Peavy 130 Special needs some TLC
« Reply #7 on: July 10, 2020, 08:21:17 PM »
It is rated down to 4 ohms, but an 8 ohm load will make it perfectly happy as well.  Take your pick.  What speaker is in it?  As far as I know the stock speaker in those is a 4 ohm Scorpion.

If I understand your concern:  the amp is rated for 4 ohms minimum load.  The internal speaker is plugged into the amp.  If the internal speaker is already 4 ohms, then there is no capability left for an external speaker.   If the internal speaker is 8 ohms, then you can ALSO use an external 8 ohm cab.  The two together make a 4 ohm total, and that is fine.

Or you can unplug the internal speaker and use an external 4 ohm cab of choice.

LoveChet

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Re: Peavy 130 Special needs some TLC
« Reply #8 on: July 11, 2020, 06:24:46 AM »
Thanks Enzo on spkr, I got it

I plan to build the light bulb limiter, test the spkr, 
hook up a spkr, and then fire it up. If light goes out I'll
let it sit and bake for awhile before turning up any knobs.

Thanks

Bill Moore

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Re: Peavy 130 Special needs some TLC
« Reply #9 on: July 21, 2020, 12:09:49 PM »
I had a Special 150 a while back that I brought back to life. The output side fuse was blown. I changed all the output transistors, and after advise from knowledgeable folks here, and elsewhere, I pulled and tested all the (driver?) transistors. After i replaced them, all is well! (dim light, intact fuse, and of course, sound!)