Question about Boss TU-12H tuners

Tyler Macy · Post by **Tyler Macy** » 15 Nov 2000 12:22 am

I just bought one of these and was wondering if there is supposed to be a light for the gauge. I'm not talking about the little red arrows, but a light ring to light up the needle gauge. I could have sworn they had lights, but my new one doesn't. I just want to make sure mine isn't a crapper.

Thanks

Tyler

Bill Crook · Post by **Bill Crook** » 15 Nov 2000 12:53 am

I've had the chance to work on a few of the older units and they did have a small lamp to illuminate the faceplate. They were also of the needle-type tuners. No LED's or such involved.

Don't know about the newer models. I use a Korg DTR-1 and sometimes a Zen-on 331 needle type. The Zen-on has a switchable lamp in it.

Jack Stoner · Post by **Jack Stoner** » 15 Nov 2000 4:03 am

I have a TU-12H and it does not have a light for the meter. It's about 6 or 7 years old.

Tyler Macy · Post by **Tyler Macy** » 15 Nov 2000 4:24 pm

Thanks for the info, I guess mine is OK. But don't you think that a light would be a good idea for dim stages? Especially for steel players who don't always want both red arrows to be on (440). Just my opinion. . .

Tyler

Jack Stoner · Post by **Jack Stoner** » 15 Nov 2000 5:30 pm

I've got other tuners that have a light, such as an old Korg AT12, and I rarely ever used the meter illumination light.

Michael Johnstone · Post by **Michael Johnstone** » 16 Nov 2000 1:02 am

Why don't you just take it apart and add a small bulb and wire it up to the 9 volt power supply. -MJ-

Steve Alonzo Walker · Post by **Steve Alonzo Walker** » 20 Nov 2000 5:41 pm

I agree with Michael except wire the light to the on-off switch.Use a meter to find a positve+ post with the switch in the chromatic position.The negative- wire goes to any point on the board that is grounded.Buy a 12volt mini-bulb from Radio Shack.

Steve Feldman · Post by **Steve Feldman** » 20 Nov 2000 10:12 pm

Boss also makes (made?) a model TU121, which is a step up from the TU12H. The TU121 has a light.

Rob Parker · Post by **Rob Parker** » 22 Nov 2000 3:12 pm

Rayman,
If you don't want to open the unit up to wire the lamp to the internal circuit,just wire the mini lamp to a 9volt battery,through a minature toggle switch.tape it to the unit,and place the bulb against the meter glass,with a small piece of tape over it...The meter glass will diffuse the light and give adequate light to read the meter...may not be 'pretty' but it works...RP...'come on in'...