Casio CZ/ VZ/ FZ - Pro Series

Have you tried to initialize? There's a button for it. But maybe it  
will not work if you can't read display.

Try to remove batteries and then switch on and perform initialization.

There's no internal battery.

If it went gradually worse and worse, it can be some contact problem,  
or transient resistance somewhere. Probably it needs some small  
maintenance and cleaning inside. I would open it, disconnect all  
connectors (one by one), clean them with some contact cleaner and  
connect again. It's good to repeat more times to disconnect and  
connect the connector for cleaning. And check power supply voltages  
to be sure this is OK. There are more grounds - digital, DAC, frame  
and analog...

If this doesn't help, you have to get it check by professional  
serviceman.

If you need Service manual, I found it somewhere on the net and can  
send you thru some big file sending service (9.6 MB PDF).

Good luck.

Daniel Forro

On Jun 18, 2011, at 7:00 PM, lloydsmith1961 wrote:

> Purchased a nicely looked after CZ5000 from a friend a few months  
> back.
>
> It has gradually become slower & slower to switch on. The display  
> shows a line of boxes & then after a while there's the click &  
> characters/sounds appear. This  delay was initially intermittent -  
> sometimes it would switch straight on.  Last night (isn't it always  
> the way) about to use it for a studio project to find it wouldn't  
> get beyond the grey box stage - no click, no characters, no sound &  
> no buttons operational.  Have checked/tested the 3 AAA batteries  
> which are all good.
>
> Is there an internal battery to check, or is this irrelevant?  I  
> want to avoid spending at least what it is worth getting it prof  
> repaired if possible.  Greatly appreciate any help.
>
> Thanks
>
> Tim