pevey basic 60 bass amp

tmcdanal · 4th December 2011, 02:37 PM

The amp stops working after a few minutes and will come back on when it is off for a while. any help ?

indianajo · 02:14 AM

Yes. Read the resistance of your speaker and wire setup to make sure it is not overloading the amp. Download an owners manaal from peavey.com and check the rated speaker impedance. Must be higher than rating (probably 4 ohms). Check meter calibration with a known resistor, the tired battery affects the low ohms scale first.
Then download a schematic from eserviceinfo.com or someplace. Search engines are good at finding schematic diagrams. Then with a dvm start looking for discrepancies. If any of the capacitors are rated above 25 VDC, read aikenamps.com tech info button technician safety button about not killing yourself electrically. No jewelry even below 25 VDC to prevent burns.
Hint- 20 year old electrolytic capacitors leak out the water and tend to take out power supply components. How old is your amp?

Enzo · 5th December 2011, 10:59 PM

Schematics are no challenge to find, just contact customerservice@peavey.com and ask for them.

Identify the problem better. Is the sound stopping but the light stays on? Or does the powr light also go off? And will it do this just sitting there? Or only when being played hard?

There is a thermal breaker, so if the amp were way overloaded, it would become very hot to the touch, and the thermal cutout would turn off power until it cooled.

MY first reaction is that your amp probably stays on but sound goes away. Is that the case? The two most likely causes of that are both jacks. One is the headphones jack. It cuts out the speaker when used. WHen your sound dies, do the hadphones keep working? And the other is the power amp on jack, tight next to the headphones jack. PLug a spare cord from Preamp Out to Power Amp In. If that restores the sound, then the power amp jack needs cleaning or service.

The original speaker was 8 ohms, and would have had numbers on it like 70777054 (the part number) or 12820B (the description).

4th December 2011, 02:37 PM	#1
tmcdanal diyAudio Member Join Date: Feb 2010	pevey basic 60 bass amp The amp stops working after a few minutes and will come back on when it is off for a while. any help ?

5th December 2011, 02:10 AM	#2
indianajo diyAudio Member Join Date: Jan 2010 Location: Jeffersonville, Indiana USA	Yes. Read the resistance of your speaker and wire setup to make sure it is not overloading the amp. Download an owners manaal from peavey.com and check the rated speaker impedance. Must be higher than rating (probably 4 ohms). Check meter calibration with a known resistor, the tired battery affects the low ohms scale first. Then download a schematic from eserviceinfo.com or someplace. Search engines are good at finding schematic diagrams. Then with a dvm start looking for discrepancies. If any of the capacitors are rated above 25 VDC, read aikenamps.com tech info button technician safety button about not killing yourself electrically. No jewelry even below 25 VDC to prevent burns. Hint- 20 year old electrolytic capacitors leak out the water and tend to take out power supply components. How old is your amp? __________________ Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,SP2-XT's, T-300 HF Projs, Steinway console, Herald RA88a mixer, Wurlitzer 4500 Last edited by indianajo; 5th December 2011 at 02:14 AM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Peavy basic 60	tmcdanal	Forum Problems	3	6th December 2011 08:30 PM
WTB: 120VCT (60-0-60) transformer for balanced power supply	jmillerdoc	Swap Meet	2	14th April 2011 06:08 PM
Very much the Schematic on LITE DAC-60-60 is required	Sergio69	Digital Line Level	0	19th January 2010 07:56 PM
Yamaha M-60 power amp for sale (w/ impaired C-60 preamp)	rainzoneman	Swap Meet	10	3rd December 2009 01:44 PM
Peavey Classic 60/60 bias mod advice	RIC	Tubes / Valves	5	23rd March 2005 06:16 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

5th December 2011, 10:59 PM	#3
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	Schematics are no challenge to find, just contact customerservice@peavey.com and ask for them. Identify the problem better. Is the sound stopping but the light stays on? Or does the powr light also go off? And will it do this just sitting there? Or only when being played hard? There is a thermal breaker, so if the amp were way overloaded, it would become very hot to the touch, and the thermal cutout would turn off power until it cooled. MY first reaction is that your amp probably stays on but sound goes away. Is that the case? The two most likely causes of that are both jacks. One is the headphones jack. It cuts out the speaker when used. WHen your sound dies, do the hadphones keep working? And the other is the power amp on jack, tight next to the headphones jack. PLug a spare cord from Preamp Out to Power Amp In. If that restores the sound, then the power amp jack needs cleaning or service. The original speaker was 8 ohms, and would have had numbers on it like 70777054 (the part number) or 12820B (the description).

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)