PX-130 Sustain Stuck On when SP-33 Pedals Connected

[Perifractic]

Hi guys,

 

I'm now on my second SP-33 pedal unit so the fault isn't there. When I simply plug in the pedal unit, sustain gets stuck ON for all keys. 

 

It must be a fault in the piano. 

 

I've removed the PCB, no short connections. With a multimeter I tested continuity on all the 5 cables running from the 5 pin socket to the PCB. No shorts or problems there. I desoldered and resoldered that plug on the PCB. No change. 

 

One SMD did look badly soldered, with dark flux around it (could even be a leak) but I reflowed that solder under magnification. No change. 

 

Any other ideas before I look to replace the entire PCB?

 

Also where can I source that PCB? Nothing coming up when I Google it on Yahoo 😉

[Joe Muscara]

I presume that when you hold the sustain pedal down, there is no sustain, and the pedal thus works opposite to what you expect, correct?

 

If so, that's because the PX-130 needs the SP-32 pedal unit, not the SP-33. Earlier models use the SP-32, of which I believe the PX-130 is one.

[Perifractic]

Interesting. No, the pedal literally does nothing. 

 

Casio say the 33 is the correct pedal. 🤔

[Brad Saucier]

2 hours ago, Perifractic said:

Casio say the 33 is the correct pedal. 🤔

 

The last item in the specs on this page confirms SP-32.  SP-33 is for PX-150 and later models.  I would go ahead and exchange the pedal unit with the correct model, then go from there.  

 

http://archive.casio.com/products/archive/Digital_Pianos_%26_Keyboards/Privia_Digital_Pianos/PX-130/content/Technical_Specs/

[Perifractic]

Damn it! Seems I've been misled by Casio. Oops. I will return it and get the 32. Thank you!