Question about Fender Hot Rod Deluxe Guitar Combo Amplifier
This often due to a cracked circuit board or bad solder joint. Sometimes input connectors are bad but those are easily discovered by wiggling the plug.
Posted on Jul 12, 2010
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Posted on Jan 02, 2017
First try turning the volume control down before turning switch to operate.
IF this seems to fix it, IF the unit has a tank reverb, the vibration of the reverb springs MAY be causing the problem. The solution then is to reduce the volume before applying power WHICH is a good idea anyway... from an electrical engineer.
Posted on Jul 26, 2009
poosibly the tube sockets are not holding the tube in place anymore. Usually the Fender's have a spring loaded carriage so to speak that hold tubes in place.
Posted on Apr 01, 2010
In refering to the schematic i find that the MOST probable cause would be a bad switch contact on the jack the pedal plugs into. There is a normally closed contact that passes the select signal within the unit to the control circuit. If the contact vibrates open, then the unit will switch. These jacks are a pile of.... prone to failure if you use them very much. With the pedal plugged in the switch is no longer in the circuit and control is solidly by the pedal.
If you remove the amp from the cabinet you can probably bend the spring contact to temporarily fix the problem, however, use that jack a bit and the problem will come back. You could cobble a good quality Switchcraft jack with switch as a replacement and add pigtail wires to the circuitry for a little better reliability.
Posted on Apr 05, 2010
Could have broken a spring in the reverb tank, or a wire connecting it to the amp, or the reverb driver tube, or a few other things, but those are the most likely in this situation. Thats what I'd check first. Give it a little slap and if it vibrates like normal, your spring is probably ok, you can still open it up and double check though. Check your wires. Then pull your reverb driver tube and replace it. If that doesn't work, it is probably in the circuit somewhere, and you should not work on your amp unless you know what you are doing. They store large amounts of electicity in the caps and they can kill you.
Posted on Apr 24, 2010
Is it the amp for sure? You need to try these things first :
Plug your guitar and lead into another amp. Does it buzz?
If so, Change the guitar lead with a NEW ONE.
Still Buzzing? Your guitar needs attention.
Ok so if it's not noisy in another amp, turn on your fender with nothing plugged in. It should be silent? Is it? If not, check to make sure no ones messed with the earth lift switch.
Next, you should try it off a different ring main. If you have upstairs sockets and downstairs sockets, they should be (but not always) on a different ring main. Try it? If you live in a flat for example, or are unsure, try it round a mates house. If it's noisy off one ring and not on the other, you have some mains interference from something else plugged into the ring main and it's not your Amp.
Is it still noisy?
Well so far, I'm hoping you have been using it all Clean and direct with NO FX Pedals and such like. These thigs can add numerous buzzes and hums to any rig. Again break it down, try each one by one until you get the rid of the buzz.
If after all this, your Fender is still being noisy, you can safely take it to your nearest music store to get it repaired without feeling like a plonker :-)
Posted on Jan 07, 2011
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