So I’ve had a Q2 since the Nineties and I like some of it’s effects. But a while back when I wanted to use it for a Delay effect, it was acting funny. Essentially the thing sounded like high-depth Chorus all the time!
So today, as I’m getting ready to work on a big project, I decided to look into this more. Does it need to be cleaned inside? I turned it on and it seemed that the Factory Preset Programs were fine, but now when going to create a User Program, the names of the Programs were all gibberish-y and when clicking the scroll wheel to “Select,” the name of the Program would just say “Bad Program”
So after a lot of Googling I finally found this. Turns out the problem is a dead battery soldered to the circuit board inside.
You can see it here, in the bottom right of the picture. It’s a Panasonic BR-2325, a 3 Volt Battery with solder terminals on it. You can get them for a few bucks online, but I’m too impatient and resent shipping fees.
I replaced mine with a CR2025, a similar 3V coin battery that I had mistakenly purchased to replace a Mac Front-row remote.
But what to do about the missing Solder-leads? It’s probably not good to cook a battery with a soldering iron, so I improvised a battery holder with two pennies.
Here’s the pennies with leads soldered to them
Next I put the battery between them. and taped it all together… I taped more than in this picture because I wanted to be sure there was very little possibility of shorting out inside the unit. I left my leads about 6 inches long so I’d have some slack to work with when soldering.
Next I desoldered the old dead battery and soldered in the leads from my DIY battery pack
Next, I gathered up the slack and taped the whole thing down onto the circuit board so it would rattle around inside the unit (while rocking out to tap tempo delay)
A more drastic version of re-initializing the QuadraVerb 2 will erase all User Programs, as well as resetting all Global parameters. Hold down [PROGRAM], [COMPARE], and [<BLOCK] (block-left) simultaneously while turning on the power.
Now my q2 works again!
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