Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
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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/
Manual sometimes for sale with the keyboard on ebay and other sites, but I have searched and not seen the manual by itself. Perhaps you could email several vendors of it to offer to purchase only a copy of the manual.
A youtube video mentions the chip is used in other keyboards as well, so there may be a similar model keyboard somewhere out there.
See that 8.2 mfd bi-polar and one of those white ceramic cased resistors???. Those parts feed your tweeter... One of them is bad. You can buy the board for $30 or spend a couple bucks for those parts.
Put one each of the above two capacitors in parallel to make 8 mfd to replace the 8.2 mfd and it will work fine. They only cost 74 cents each. You can find the resistors as well from Mouser.com.
IF YOUR crossover is potted in a hard material, that probablly destroyed the caps. The caps would have to be encased in a foam before hard potting as the shrinkage of the potting material would crush the caps a bit and cause failure.
Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
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