Fender Hot Rod Deluxe Repair Kit (also Blues Deluxe, Hot Rod Deville and Blues Deville)

£3.50£36.00

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Description

Hot Rod Deluxe repairs are the most common jobs on my bench. I’ve fixed lots of these amps (see here). The Hot rod Deluxe/Deville and Blues Deluxe/Deville have a number of common faults, all of which are easy to address.

1. LT voltage supply:

Symptoms:

Crackling, Channel switching issues, Sound cutting out, Humming, Reverb not working, Loss of Power, Nasty Distortion.

Why?

This is far and away the biggest problem with HRD and BD versions 1-3 and counts for about 65% of the units I see. The amps use a Resistor/Zener/cap combination to create an LT supply. This overheats and desolders itself, often causing some degree of PCB damage. You can see just how hot the amp gets on the thermal images on my repair website). The difficulty of the repair depends upon how long it’s been left unfixed – in worse cases the PCB has been more damaged by consistent overheating and requires some degree of retracking. The footswitch supply occasionally has similar issues. The way to fix this is really simple – just use resistors and zener diodes with preformed leads that hold the components away from the PCB.

2. Filter capacitors (caps).

Symptoms:

Crackling, Sound cutting out, Humming, Loss of Power, Nasty Distortion.

Why?

I’m not an advocate of recapping an amp for the sake of it, but Fender use unreliable filter caps which have a tendency to fail, this is probably a good 25% of remaining failures. They don’t *always* fail though, despite the forum claims. Whether they’re the cause of the problem or not I always recommend replacement as it’s worth doing whilst the amp is open to make the amp as reliable as possible, but in some cases you may prefer to decline to replace unless they’re the root cause of the problem. You can also upgrade a Hot rod Deluxe PSU to a Hot Rod Deville spec for a reliability upgrade. The tone remains the same, but the stress on the caps is reduced.

3. Phase inverter anode resistors.

Symptoms:

Loss of Power, nasty distortion
These have a tendency to go open circuit. I replace them with higher rated parts.

Contents:

Hot Rod Deluxe repair kit and Blues Deluxe repair kit include:

  • Instructions
  • 1x 47u 500V high reliability RubyCon Cap
  • 3x 22u 500V RubyCon Cap
  • 3x Keld Ampworks Axial/Radial adapter boards.
  • 2x 5W LT supply Dropper resistors, preformed
  • 2x 5W Zener Diodes, preformed
  • 2x phase inverter anode resistors
  • 1x Foot switch dropper resistor, preformed

Hot Rod Deville repair kit and Blues Deville repair kit include:

  • 2x 100u 350V high reliability RubyCon Cap
  • 2x 47u 350V high reliability RubyCon Cap
  • 2x 22u 500V RubyCon Cap
  • 6x Keld Ampworks Axial/Radial adapter boards.
  • 2x 5W LT supply Dropper resistors, preformed
  • 2x 5W Zener Diodes, preformed
  • 2x phase inverter anode resistors

Hot Rod Deluxe repair upgrade kit and Blues Deluxe repair upgrade kit include:

  • 2x 100u 350V high reliability RubyCon Cap
  • 2x 47u 350V high reliability RubyCon Cap
  • 2x 22u 500V RubyCon Cap
  • 6x Keld Ampworks Axial/Radial adapter boards.
  • 2x LT supply Dropper resistors, preformed
  • 2x Zener Diodes, preformed
  • 2x phase inverter anode resistors
  • 4x Splitter resistors
  • 4x Links

Additional information

Model

Hot Rod Deluxe or Blues Deluxe, Hot Rod Deville or Blues Deville, Hot Rod deluxe or Blues Deluxe (upgrade)

Kit

LT Supply / Footswitch only, Filter caps only, Fix everything!

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