Replaced Volume Pot And Input Jack In My Pro Juinor

[STRATDELUXER97]

Fender sure went with cheap crappy plastic stuff in this amp..The volume pot was really noisey and cleaning it didn't help,plus the plastic input jack got real loose on the inside....I used good quality CTS and A switchcraft jack and hard wired the new components to the pcb...Mounting the volume pot to the chassis and then getting the pcb back in place was a bit tight but it all worked out ok...Why would Fender want to skimp on the most important and most used parts on their amp? Plastic stuff is just garbage!

John

 

[kmcguitars]

That's a great Idea I just replaced the input jack in my Champ 12. Those plastic jacks have a major design flaw. I thought about
doing something like that, But I wasn't 100% sure it would work right. Next time it gets a switchcraft Thanks for the heads up.

 

[Lewguitar]

Re: Replaced Volume Pot And Input Jack In My Pro Juinor

Fender sure went with cheap crappy plastic stuff in this amp..The volume pot was really noisey and cleaning it didn't help,plus the plastic input jack got real loose on the inside....I used good quality CTS and A switchcraft jack and hard wired the new components to the pcb...Mounting the volume pot to the chassis and then getting the pcb back in place was a bit tight but it all worked out ok...Why would Fender want to skimp on the most important and most used parts on their amp? Plastic stuff is just garbage!

John

Why? Cuz if one part costs $1 and the cheap part costs 10 cents and you sell a 10,000 of those amps, you just made another $9,000 by using the cheaper part! Now multiply that number times ALL the cheap parts in those amps and every other amp Fender makes and THAT is a lot of money saved/made.

BTW John: HAPPY BIRTHDAY!

Lew

 

[Lewguitar]

Amen Strat.I know companies have to be cost effective to be competetive,but I sometimes wonder if they truly research some of their decisions.Using inferior quality materials that affect your product is never a good idea.

Not a good idea for US! It's a great idea for THEM.

Fender doesn't seem to be having any trouble selling them just the way they are...

Lew

 

[proxy]

I'm not exactly sure what plastic jack design, but I would think a plastic jacks purpose would to be to isolate your guitar's ground from the amp for whatever reason.

However the plastic pots I agree aer unacceptable.

 

[STRATDELUXER97]

I'm not exactly sure what plastic jack design, but I would think a plastic jacks purpose would to be to isolate your guitar's ground from the amp for whatever reason.

However the plastic pots I agree aer unacceptable.

None of the changes made by replacing to better pots and a better jack made any difference in whether the new components were plastic or metal or it's effects on grounding...Basically the wiring is identical and I wired from the pcb over to the independently mounted pots and jack...The old pots were plastic,really small,and cheesy,and real scratchy sounding...The jack was real loose when you'd push a cable into it..All problems are solved now though...I had to use the screw on chicken knobs to fit on the solid shaft 250k pots I replaced to..

John

 

[kmcguitars]

I was just wondering... If I replace my plastic 4 lug switch with a switchcraft, Witch lug is hot and ground on the pcb? I know2 of
the lugs are just for holding it to the pcb. If I had to guess I'd
say the one close to the front panel is the ground and furtheist
would be hot? It's a 50 50 chance but I only want to do it once.

 

[STRATDELUXER97]

I was just wondering... If I replace my plastic 4 lug switch with a switchcraft, Witch lug is hot and ground on the pcb? I know2 of
the lugs are just for holding it to the pcb. If I had to guess I'd
say the one close to the front panel is the ground and furtheist
would be hot? It's a 50 50 chance but I only want to do it once.

There are 2 lugs for ground and 2 lugs for hot that are connected together for each side of the input jack on the pcb...Just put a cable or a jack into the input jack and use your meter to determine which connection on your pcb is hot and which is ground,mark the connections on your board...You then just hard wire 2 wires from the pcb over to your new jack...I used the switchcraft jack that has the extra tap alongside the hot side of the input jack..You connect a wire from the ground over to the center jack terminal so when nothing is plugged into your amp,you have a quiet signal..