I need a Casio LK-30 AC Adapter

I'm pretty sure that the Lowrey was a rebadged Casio keyboard with the same model number. https://www.manualslib.com/manual/358460/Casio-Lk-30.html
You could also take a look at some of the other manuals here https://www.casio-intl.com/asia/en/emi/pastmodels/

You can't add songs to the LK-30 song bank. I suspect you would need to take apart the keyboard and replace the ROM (read-only memory) chip to get a different song collection.

Most Casio electronic instrument manuals are available from http://support.casio.com/en/manual/manual.php?cid=008 . However, I found the LK-30 manual at manualslib.com: https://www.manualslib.com/manual/358460/Casio-Lk-30.html .

I wish that I had better news for you.

Cindy Wells

Some Casio Keyboards use 9V DC (center negative) others 12V DC (center negative).
If check what voltage your Keyboard use. Generic AC adapters are usually center positive. So you have to invert the wire with a new DC plug to make it center negative,
Easiest is to buy a Casio ac adapter made for your keyboard from a Casio retailer.

you nearest casio dealer may have one in the back of the store,
many buyers don't want/need the manuals so some stores hold on to them for such occassions

The adapter has a problem... likely a poor connection of input power that briefly contacts building up some voltage that is then stored in the capacitors in the adapter which then discharge quicklly when you turn on the Casio. The adapters with FIXED blades OFTEN have problems contacting the connections in wall receptacles and extension cords. You may need to bend the blades slightly or use a better receptacle like connector. IF your adapter has a three wire cord from it to the wall receptacle, those SOMETIMES don't seat well...

If it's blown a regulator in the keyboard you may be lucky that that's all that's gone.... If unlucky it could have rippled through & taken out a lot of the electronics. (aka a right off) A decent repair shop should be able to take a look & give you a price to sort it.....

Yes it could be. Drop voltage adapter can cause power/pre-amp not work properly, but still can power up the lights.
There maybe power supply circuit failure inside LK45 and also power-amp problem.

Hi - look in back or under keyboard for power specs.Then go to Guitar Center and the right adapter. GuitarCenter.com has casio power adapters.

I was also looking for the manual on-line which an e-bay seller told me was available. Not from Casio, but someone was nice enough to scan in a manual at http://www.usersmanualguide.com/casio/musical_instruments/lk-30. It is in PDF format, so you will need to download it and view it with Acrobat reader or similar. Not the greatest quality as it is just a copy, but certainly readable.