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Boss 9v psu question

Postby Dr R » Fri Sep 07, 2018 9:19 pm

Really quick question:
I have just bought a Boss TU-88 tuner/metronome/mini monitor for practising with. It runs of 9v battery or a 9v Boss psu. Annoyingly it doesn't say what the current draw is, or whether the centre is negative or positive. I have googled it, but not found any specs.

Does anyone know? I have half a dozen spare psus, hopefully one will work.

Thanks as always, Rich
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Re: Boss 9v psu question

Postby Wonks » Fri Sep 07, 2018 9:51 pm

Boss are always centre negative. Current draw is 30mA.
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Re: Boss 9v psu question

Postby ef37a » Sat Sep 08, 2018 6:48 am

Wonks wrote:Boss are always centre negative. Current draw is 30mA.

"I love it when a plan...."

Nice one Wonks.

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Re: Boss 9v psu question

Postby Sam Spoons » Sun Sep 09, 2018 4:42 pm

Did this work on the same principle as, when needing to know the time during the early hours, sticking a drum out of the window and banging it with enthusiasm? Somebody is bound to shout "who the hell is banging a (insert choice of expletive here) drum at 2 o'clock in the morning?

I'll get me coat
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