GIBSON thunderbird IV pots

[asriel]

I have SN# 0284XXXX Thunderbird (Gibson).

Could you tell me what pots come stock?
the volume pots are stamped "Gibson 74-XXXXXX"
and the tone pot has been replaced with a 100K "made in Japan"

If I were to replace ALL of the pots and the capacitor, what
should I put in?

Thank-you

 

[aquateen]

the schematic calls for 500k audio taper pots for volume, 250k audio taper pot for tone and a .047 cap.

Invalid Link Removed

 

[asriel]

thank-you. I have that schematic, and I figured that is what 'used' to come stock, but I had seen other threads that mentioned Gibson using 100k or 300k pots...

the tone pot had been replaced (before me) with a 100k pot, and the cap has no label on it!

if I presume the stock Gibson V pots are 500k, and I put a proper CTS 250k w/ .047 cap in place of the replacement pot --- will this cause me issue if the V pots are not 500k, but either 100k or 300k ?

Perhaps I should just put all new pots... I'll do that.

Thank-you for your help.

Asriel...

 

[kyral210]

There is no need to replace your volume pots unless they are scratchy, as they are Gibson and the right value.

Just put a new 250k audio taper pot in place of your 100k Japanese one. Also, add a Sprague Orange Drop 0.047uF capacitor. I am doing this to my Epiphone Thunderbird, which currently have 500k pots all round.

 

[aquateen]

There is no need to replace your volume pots unless they are scratchy, as they are Gibson and the right value.

Just put a new 250k audio taper pot in place of your 100k Japanese one. Also, add a Sprague Orange Drop 0.047uF capacitor. I am doing this to my Epiphone Thunderbird, which currently have 500k pots all round.

you're right, this is the least invasive repair.

 

[justinmc]

I had a hard time finding these images; here are some relevant ones:

the schematic calls for 500k audio taper pots for volume, 250k audio taper pot for tone and a .047 cap.

Invalid Link Removed

-Mack Rainodes

 

[Tbird51]

interesting that the 79 has 100K all around according to the schematic. Maybe that is why my 79 sounds so much bigger than my 76.

 

[lowendblues]

Interesting...Does the value of the pot have a real big impact on the tone of the bass?

 

[Mark Cult]

Im currently working on my Epiphone Tbird Gothic. I replaced the cap with a 0.1uf Rusian PIO i found on eBay for under £5. It sounds great, really gives the deep grunt i was after. I think that i am just gonna replace the tone pot with a genuine Gibson 300k pot as the 500 seems to jump between tones when adjusted somewhat. I put this down to the new cap... now a bit of a newbie question; do i go for a long shaft as it is through the body, not a pick guard/plate? Cheers guys