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High voltage power supply for peavey valveking 112

Hi there. I was playing through my amp at night, everything was fine, then drove to campus that same night to jam with friends, and when I got there, NO SIGNAL!!! Techinical store said me to change High voltage power supply, does anybody know where to buy this item ? Can you hear me, occupy my brain ! mkk_oc@hotmail.com

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  • 232 Answers

Shop time...

Posted on Sep 20, 2014

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Posted on Jan 02, 2017

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SOURCE: Peavey 400SC

You can find Peavey's manuals in their archives at
http://www.peavey.com/support/searchmanuals/archived.cfm

They are grouped alphabeticaly across the top.

Go Fer' It,

FixThemAll.........

Posted on Dec 15, 2008

danforddan1
  • 192 Answers

SOURCE: When the power switch is turned on the amp just has a loud hum and nothing works not even the little power indicator light..

You have a bad ground probably inside the amp , you need a on hands Tec for this one. I bet its not to serious , about $65.00, is it worth it to ya all tho I don't know your area , but its been my exp.this would be a fair price most any where. good luck DFD

Posted on Apr 13, 2009

CRTN
  • 716 Answers

SOURCE: hi- When I plug in

Sounds Like The Amp Has A Grounding Problem Check To See If The Ground Wire Is Hooked Up Inside The Amp And Or If The Pin Has Been Broken Off The End Of The Cord.
Sincerely,
Michael Scott

Posted on Jul 24, 2009

  • 5603 Answers

SOURCE: I have a Peavey Valveking 112 . The standby switch

SOMETIMES the screws holding the handle go down into the amp. Sometimes there are screws from the sides also.

The LAST problem is the Tolex covering often bonds and interferes with removing AND installing the chassis...

It is best to NOT put too much force till you can tell it is free... they still can be nasty to slide out...

Posted on Sep 23, 2010

  • 5603 Answers

SOURCE: I have a Peavey ValveKing

Buy ONE new 12AX7 and try it in location V1 and if it doesn't help, try it in V2. This tube has TWO heaters in it and if one is intermittent that could cause your problem. The vibration MIGHT be "fixing" a briken heater after some time.
There are MANY components that could cause this, so you might have to take it in for repair if it isn't a simple tube problem. Since it works on the clean channel, V3 should be OK.

Posted on Feb 11, 2011

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1 Answer

Peavey problems


Numerous possible issues with your description. I would start with the tubes, and check if not one or more has faulted.

Jul 19, 2014 | Peavey Valveking 112 - Tube Guitar...

1 Answer

My peavey valveking 112 keeps frying the 12ax7 tube. its the one behind the input jacks.once its gone it gets distorted sound on clean side.when you turn it back to standby static noise back through...


Looking at the schematics my 1st guess would be a defective capacitor C114 20uf 50volts. If you are not an experienced electronic tech I would not recommend you work on this yourself. This amp operates with dangerously high voltages that remain even when unit is unplugged. If you touch the wrong thing it CAN kill you. You can probably have this repaired at professionally shop for around a $100.
Below is a link to download the schematics. Take them with you to the repair shop:

http://ultimate-guitar-valveking.wikispaces.com/Warnings

Jan 24, 2014 | Music

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No Power after Valves glowed bright


This could be a transformer failure. Take it to the repairs shop.

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1 Answer

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Check speaker impedance or disconnect speaker leads, then use a 9V battery to verify cone movement and if this test is ok, then go inside the amp, if there's no fuses blown check opamps supply voltage which should be -15V at pin-4 and +15V at pin-8, let me know your results to help improvement.

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My peavey valveking vk 112 is making a whistling noise I changed the 2 main tubes and it is still doing it what coud be the problem and how can i fix it


A high frequency feedback can be very hard to isolate without test equipment... you MIGHT have a "microphonic" tube that picks up from the speaker and feeds back... Tap the small tubes with a pencil and see if any of them "ring"... gentle taps of course... If one seems sensitive, swap like numbered ones around to see if you can find a happy place for them. Electrically there could be a bad ground inside causing these.
I notice you have 4 tubes in the output... REMEMBER when you used matched pairs... the members of the pairs do NOT go side by side all the way down the string...
Put each tube of a matched pair at the ends of the string of four, and the other pair as the middle two...

Feb 12, 2011 | Peavey ValveKing 100w All Tube 212 Combo...

1 Answer

I have a Peavey ValveKing 112. It seems like it just takes forever for the tubes to warm up. For like the first hour that it's turned on the clean channel seems fine, but the second channel doesn't work....


Buy ONE new 12AX7 and try it in location V1 and if it doesn't help, try it in V2. This tube has TWO heaters in it and if one is intermittent that could cause your problem. The vibration MIGHT be "fixing" a briken heater after some time.
There are MANY components that could cause this, so you might have to take it in for repair if it isn't a simple tube problem. Since it works on the clean channel, V3 should be OK.

Feb 11, 2011 | Peavey Valveking 112 - Tube Guitar...

1 Answer

I have a Peavey Valveking 112 . The standby switch is broken and I want to remove the amp to get at the switch. I've removed the 4 bolts from the top of the amp and the 2 screws at the back but it is still...


SOMETIMES the screws holding the handle go down into the amp. Sometimes there are screws from the sides also.

The LAST problem is the Tolex covering often bonds and interferes with removing AND installing the chassis...

It is best to NOT put too much force till you can tell it is free... they still can be nasty to slide out...

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