How to Fix Fender Blues Deluxe III Blowing Fuses and no Reverb

Four faults on this amp! Follow me as I work my way through them and bring it back to life.

[@michaelevans3852]

I know you may not like it, but I like to see how you work on multiple issues. It helps us see how you move from one to another. It's nice to hear your thoughts as you work through the problems. Thanks again for an informative, entertaining video.

[@stuartukguitarampguy5830]

Thanks Michael.

[@MrDiscomfortzone]

Love your videos. As a retired electronics tech, I have to say I wouldn't spray cleaning products directly on front panels where overspray can get into connectors. Better to spray on a cleaning cloth or lint-free paper towel, then wipe the surface.

[@stuartukguitarampguy5830]

You're right. I'll strive to do better!

[@zbaby82]

Good job. When I clean my amps I just use a damp sponge along with distilled water.

[@stuartukguitarampguy5830]

Hi Zak I don['t find that has much effect on the ingrained dirt on the Tolex. That soft top car cleaner is really amazing.

[@ottomans2876]

Stuart , the Bob Ros of amp repair. I mean that in the best possible way

[@stuartukguitarampguy5830]

Haha, I LOVE that! "Just ease that resistor in... let it go where it wants... maybe a touch of capacitor over here... just let it come in its own time..."

[@3MonkeysGarage]

Something I noted awhile back is when you have a push pull amp and one tube loses it's proper voltage and or current, the other tube will run away and burn up. And it won't take very long. I guess if we dug into it more, it is because when you lose any one tube in the circuit, suddenly there is more voltage available and the tubes in push pull are already designed to work on more than a single ended tube would be. So, suddenly you get a flood of current and voltage to the one power tube left in the circuit. Makes me wonder if there could be an easy design modification to add in an overvolt - overcurrent protection on each tube while not interfering with the operation. Well, missed my decade. :p

[@stuartukguitarampguy5830]

Yes I think there's truth in that. The tibes 'load' the HT and so if one goes down, there's less load and the HT goes up, stressing the other tube.

[@faultlessguitarsandamps1116]

Hahaha . I do that with the reverb clip screw too .

[@stuartukguitarampguy5830]

Great minds!

[@williamgombert7710]

Maybe a stupid question, but as English is not my native language, what do you mean with HT?

[@stuartukguitarampguy5830]

Hi William, There are not stupid questions. 'HT' is short fo 'High Tension'. It's a rather old fashioned name for High Voltage. It's still used in valve guitar amplifiers. E.g. the 'HT Fuse' is the one in the high voltage line.

[@JONNIE_ROCKER]

Is it the same on a 1995 Blues Deville,?

[@stuartukguitarampguy5830]

Similar but not quite the same. I can;t recall the differences at the moment. V similar though.

[@rgbplumbinghilton]

5W Resisters just need lifting up. Poor workmanship really and such basic standard practice. Rip out all those crappy caps!! :)

[@weschilton]

These amps are deigned to fail, thats why they are so cheaply made with poor components.