Question about Fender Hot Rod Deluxe Guitar Combo Amplifier

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The Overdrive channels stopped working

The Overdrive channel stopped working though the overdrive channel light comes on. When I switch to More Overdrive, the light doesn't change and I hear a buzzing sound

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  • 11 Answers

Probably a blown opamp

Posted on Dec 07, 2009

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Posted on Jan 02, 2017

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Can l get a drity guitar sound with my ampeg vt-60 if so how?


The VT 60 was made in the USA and was a very good sounding amp introduced by SLM (St. Louis Music) in 1989.
There are three channels: clean, crunch and overdrive.
You should be able to obtain a decent dirty using crunch channel but if I remember well you MUST have the dedicated pedal to switch channels and reverb.

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I have a Marshall mg100hdfx Head & Cab - The clean channel is on but when i hit the footswitch it is not changing to overdrive channel - please help


Sounds like either your "front-panel" switches are not set for channel switching or the footswitch's mechanical "Channel" switch is defective. According to the OM the "Channel Select Switch" on the front becomes inactive with the footswitch plugged in.

If disconnecting the footswitch causes this front-panel switch to operate properly then it has to be your mechanical switch in the footswitch. Repair of these footswitches are pretty simple provided you find a replacement and have soldering abilities.

Oct 25, 2012 | Music

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How do I fix a blown op amp on fender hot rod deville 2x12?


Unless the person that analyzed this problem used an oscilloscope and did detailed troubleshooting, I would NOT jump to the conclusion that aan op amp was blown BASED upon my looking at the schematic of the unit. There are MANY components involved with the overdrive channel, including relays and other transistors and components. The most probable caause would be that 1/2 of the V2 vacuum tube is burnt out. Test by swapping V1 with V2. If NOTHING works, then replace the tube that is NOW in V1 as the second section of it has a burnt out heater. Also a bad potentiometer for the OD channel would be a suspect. A VERY common problem is broken solder at pot terminals. Try plugging a set of headphones into the preamp output. See if you can hear sounds in bothe OD and clean channels. Note you will only hear sound in the LEFT headphone as the preamp out is MONO. MOST of the three op amp chips would NOT kill the OD signal if they were bad.

Sep 04, 2012 | Fender Hot Rod Deluxe Guitar Combo...

1 Answer

Extreme differences on overdrive channel


Please, take it to a tech in your area, or look for a good one to ship it to. An 2007 amp is not old at all.

Jul 24, 2017 | Marshall Mg100dfx 100-Watt Combo Guitar...

1 Answer

When i use the over drive it will switch back and forth between the clean channel. But when im on the clean channel it is fine.


Sounds like the overdrive switch needs cleaning (with switchcleaner) or replacing. Try touching the switch gently when in overdrive position - if that brings on the jump-to-clean fault, then you confirm the switch is the problem.

Dec 17, 2010 | Fender Hot Rod Deluxe Guitar Combo...

1 Answer

Everytime I play on my Fender Frontman 212R the amp switches betweeen the overdrive and clean channels. I can't even switch between the channels on my own. It does it itself. I need help fixing this...


You don't say if you are using a footswitch or not... If you are, the switch, cables and connectors are suspect.

If you are NOT using the controller, the switch contacts on the footswitch jack in the 212 are suspect as being intermittent contacts.

If the contact is not making, the OD switch on the unit will NOT work either.

These jacks, and their contacts are JUNK and often cause problems.

Open the unit and increse the tension of the contact springs.

Jul 27, 2010 | Fender Frontman 212R 100W 2x12 Guitar...

1 Answer

My 94 blues deluxe switches channels by itself .happens occasionally.it will switch to the overdrive channel, then a few seconds later switch back to the clean channel.


IF YOU ARE USING the footswitch, then likely problem is with cable and or the pug and jack.

IF YOU ARE NOT using the footswitch the contact switch on the jack for the footswitch is PROBABLY intermitent contact. These jacks are POOR quality in the music equipment. If this is the case in yours, open the unit and tighten the spring contact.

May 08, 2010 | Fender Hot Rod Deluxe Guitar Combo...

1 Answer

My 100hdfx has a problem switching channels. Both overdrive channels work fine but the clean channel is none existant. If you switch it to the clean channel and turn it up all the way you can faintly here...


have you tried the footswitch to change channels. also. my amp has to be in channel 2 position (with the button on the head) before i can use the footswitch. sometimes the input/footswitch jack wears out and you need to bend the internal tip/ring tabs of the jack to make better contact. also like on my fender amp, i had just a standard mono instrument cable going to my footswitch and it was acting wierd cause it needed a stereo instrument cable. one last thing on the grounding resistors on the pcb, they get hot and break the solder welds which messes with all sorts of stuff in amps. usually look like sugar cubes , cement resistor. 5watt usually under 1k ohm. check for bad solder welds on the pcb where the big resistors are and the switches/buttons and at the footswitch. there may be a bad ic or transistor for the channel swithing

Dec 30, 2009 | Marshall MG100HDFX 100-Watt Amplifier Head

1 Answer

Deville 212 overdrive channel making Loud humming noise


It sounds like a filter capacitor(s) has failed. The electrolytic caps dry out and cease to perform allowing unfiltered power to reach the preamp sections and get amplified.

Being this is tube with high voltages, an experienced person should work on it due to shock danger.

I assume you checked the tubes for shorts as well as emission since a heater to cathode short could cause this as well.

Sep 30, 2009 | Fender Hot Rod Deluxe Guitar Combo...

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