Casiotone 701

[Petrus]

While I was playing I smelled something burning and smoke was cumming out of the keyboard. I opened-up the keyboard but I can't see anything wrong. Anyone had a similar problem or idea what it can be?

 

[happyrat1]

Smoke coming out is a BIIIIGGGGGG NONO!!!

Unplug it.

Simple explanation??

Unplug it.

Something inside cooked.

Long explanation?

Take it to a tech before it burns your house down...

Gary

 

[CowboyNQ]

While I was playing I smelled something burning and smoke was cumming out of the keyboard. I opened-up the keyboard but I can't see anything wrong. Anyone had a similar problem or idea what it can be?

I'm pretty sure you were playing too fast. The friction caused by the pace of fast playing can often cause components in cheaper keyboards to heat up to the point of combustion.

I'm not an expert on Casio, but I believe the "701" designation on your model refers to its safe operable limit in degrees fahrenheit.

A simple solution that might assist: Read your sheet music, if you see a notation such as "Allegro" or "Allegretto" simply strike it out, or maybe white it out if you prefer and hand write "Adagio", "Lento" or "Largo" in its place.

You should find this slows the music considerably, allowing you to operate your keyboard safely and without further heat-related incident.

 

[theactor]

I had the same. One of the square capacitors (22n Y2) near the power supply is burned. Look for black traces in the capacitor's shell and on the pcb (you can still see black traces behind the bottom one of my 701). Replacing them both is a piece of cake.

 

[gaston]

I had the same. One of the square capacitors (22n Y2) near the power supply is burned. Look for black traces in the capacitor's shell and on the pcb (you can still see black traces behind the bottom one of my 701). Replacing them both is a piece of cake.

View attachment 2107

This just happened to me. And there's indeed one of these capactiors who blew up. But could just one of these make that much smoke?? Do your casiotone work fine now that you replaced them?

 

[happyrat1]

The designers probably used a design that sacrifices one or two key components in the event of a full short circuit overload. If the cap was electrolytic it could have been caused by reverse polarity.

Either way, once you do the repair check the board for any shorts between the power buses and make certain you are plugging in the right supply.

Try it with batteries first.

Gary

 

[theactor]

This just happened to me. And there's indeed one of these capactiors who blew up. But could just one of these make that much smoke?? Do your casiotone work fine now that you replaced them?

Mine still works fine after replacing these capacitors. And yes, if they blow, it creates a lot of smoke ...

 

[Zooquest]

Mine still works fine after replacing these capacitors. And yes, if they blow, it creates a lot of smoke ...

Hello @theactor I have a Casiotone 701 and I also need to replace the two Rifa capacitors.
Which capacitors did you use? Thanks a lot

 

[happyrat1]

Datasheet Archive: RIFA%20PME%20265 datasheet by Not Available

Preview and download the RIFA%20PME%20265 datasheet by on Datasheet Archive.

www.datasheetarchive.com

 

[Zooquest]

@happyrat1 Do you think this could be also a right replacement?

https://canada.newark.com/kemet/pme271m522mr30/cap-sup-x2-mp-275vac-radial/dp/58Y5013?ost=pme271m522mr30

 

[happyrat1]

No.

 

[happyrat1]

It's a PME 265.

THAT'S The Number you need to get.

rifa pme 265 - Google Search

 

[happyrat1]

They seem to be tough to find.

Read this thread.

PME 265 Rifa cap on Teac X1000R across power switch/ Equivalent replacement needed

As the title says, I've got a silver X1000R on the bench, and there is a RIFA bomb across the power switch. I get nervous when I can't find an exact replacement for these X1 type caps. I'm looking at the Kemet's over at Mouser for a replacement, but will take what I can get as long as it is...

www.tapeheads.net

Be wary of replacements.

Here's exact replacements.

Pulls from old gear.

RIFA PME 265 ME 0,1uF 250v Suppression Metallizad Paper Capacitors Bag Of 22 Gold | Reverb Canada

RIFA PME 265 ME 0,1uF 250v Suppression Metallizad Paper Capacitors Bag Of 22 Gold These are most likely used with short leads. All chips, capacitors, resistors etc. are being sold as is due to age and inconsistency. See phots they are new old stock. If you know anything about these you un...

reverb.com

Gary