Fender AX-12 Chromatic Tuner

[bluesjunior]

Wondered if anyone here can give me any help or advice on this question?.

While I was restringing and checking the intonation on my Strat yesterday my dog walked into the wire from the 9v adapter to the AX-12 tuner resulting in it being pulled off the table and landing with a clunk on the floor.On checking it I have power on and the other three buttons light up what they did before both with the adapter and also with a 9v battery but it isn't tuning anymore either with the inbuilt mic on an accoustic, or with an electric using the jack socket. The bypass works as I can hear sound from my amp with the tuner connected in line both switched on and off but I seem to have no tuning activity.

I'm afraid I know next to nothing about electronics. My instincts lead me to believe something, ie a fuse or somesuch has blown but I have opened it up and cannot see anything obvious. There are no fuses as I perceive them to be seen and no breaks or such to be seen. I can solder and know how to rewire a guitar but haven't a clue what to do here other than put it down to experience, buy a new one and be more carefull in future.

Just thought I would ask some advice here before deciding. Thanks in advance for any help offered.

[newey]

Blues-

Afraid I can't be much help as I've never seen the innards of one of these. Since the unit powers up, it's not a loose connection to/from the battery or 9V input jack, and the in/out jacks must be ok if you get signal to the amp.

Which means you probably banged something loose on the circuit board (or, rather, the dog did . . ). You'll need to post some photos of the innards, and you'll need a multimeter to check the various components. Post photos, sometimes all it takes is another set of eyes to spot the problem. You may also need to de-mount the circuit board from the case so that you can see/photograph the backside of it, depending on how it's mounted in there.

Since you're looking at having to buy a new one anyway, no harm in tinkering with this one, maybe you'll get lucky and get it working again.

AFAIK, there wouldn't be any fuses in there.

[bluesjunior]

Thanks very much for the reply Newey.

My son told me of a new electronic repair place which had opened on one of the local trading estates. I gave him a ring and explained what had happened and although his business is mostly Hi-Fi repairs focussed he said to bring it in and he would have a look at it.

Just have to wait and see what he can or can't do now.

[ChrisK]

I would suspect that a component or its mounting onto a printed circuit board has broken from the impact.

Is there anything loose or rattling around?