Tune bass guitar electronics

[Shaun Page]

Hi, does anyone know where I can buy a replacement circuit board for a Tune bass? I'm after a TB05B board. On my bass only one pickup is working. The pickups measure a resistance of 9k and 6k ohm respectively - so I think they are ok, but I can't find anyone who has replacement circuit boards. Please help?

 

[Obese Chess]

I don't say this disparagingly, but have you tried contacting Tune? They have the wiring diagram for the TB05B on their site and I imagine they'd be willing to sell you a preamp.

Here's a thread from TB in 2008 where someone had the exact same issue with the exact same preamp, it may be useful for troubleshooting: https://www.talkbass.com/threads/replacement-electronics-advice-for-80s-tune-bass-maniac.1353142/

If you want to get really crazy, maybe one of these guys will build you one: https://www.talkbass.com/threads/replacement-electronics-advice-for-80s-tune-bass-maniac.1353142/

Best of luck!

 

[ddnidd1]

Here ya go:

PARTS | tuneguitars

www.tuneguitars.com

 

[Shaun Page]

Thanks for the thread link, I tried contacting Japan and Korea, but got no reply. I believe both factorys have shut down

 

[Shaun Page]

Here ya go:

PARTS | tuneguitars

www.tuneguitars.com

Thanks I did try that site... but no response

 

[ddnidd1]

You might have better luck going through a dealer or at least they may be able to give you some guidance.

DEALERS | tuneguitars

www.tuneguitars.com

 

[ddnidd1]

Also just FYI the tune preamp was used in bossa basses.

 

[Shaun Page]

Also just FYI the tune preamp was used in bossa basses.

That's handy to know, I'll try them. Thanks

 

[gruvit]

I’d hit up Danny Stewart over at Bass Japan Direct. If he can’t source one for you himself, I’m sure he could at least point you in the right direction.

 

[ddnidd1]

That's handy to know, I'll try them. Thanks

Be aware Bossa is no more and don't get sucked in by the knock off Bossa Tributes.

You can also try the TB classifieds. Someone may have done an upgrade and has a preamp in a parts drawer.

 

[Shaun Page]

I’d hit up Danny Stewart over at Bass Japan Direct. If he can’t source one for you himself, I’m sure he could at least point you in the right direction.

Thank you, I've sent him a message

 

[kodiakblair]

I believe both factorys have shut down

Not so.

Tune Guitar Maniac over in Japan are still trading though note the different name. 'Guitar Maniac' are a small luthier shop building guitars/basses under 3 brand names. They're quite precious regards the 'Guitar Maniac' logo and will have nothing to do with anything labelled 'Guitar Technology'.

Tune Guitar Technology in Korea are also still going. Parent company WSC Music keep them afloat for nostalgia reasons as it was the Tune contract which was the making of the company. Trouble is WSC Music are 'trade only' , enquires under $2k go straight to junk mail.

You have 2 options open to you. Replace the Blend pot or replace the EQ. I had the Vol pot replaced in my mid 80's fretless Tune, while with my early 90's Maniac I just replaced the PCB for a Tone Monster EQ.

If you go looking a replacement EQ here's some figures to keep in mind.

Bass is +16dB/-6dB at 90Hz
Treble is +18dB/-6dB at 5.5kHz

 

[Shaun Page]

Your valuable information is much appreciated, I had no idea.
I have now emailed TGM in Japan to see if they have spare circuit boards. Thank you!