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KP04 Power supply issue
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 Posted: Monday May 28th, 2012 12:16 pm
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auredor
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Hello,

I disconnected the KP04 from main power to move it to another place. Before it was working fine. But when I reconnected, there were no sound or led on.

I've checked the voltage and there is ~12V at the input of the low drop voltage regulator (U6) but nothing at the output. The capacitor C12 is warm.

So, I guess that the issue come from there... Any advice?

If I want to replace the regulator, can I use something similar to the KA76L05Z? I think that it will take too much time/cost to send it back to you just to replace thoses? What about the warranty if I do it by myself (I'm electonic engineer).

Thanks.



 Posted: Monday May 28th, 2012 01:32 pm
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ident
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Have you tried to leave it off for a while? Disconnect the KP04 should not cause the regulator to fail

76L05 is a low drop out version of 7805 since you are an electronic engineer

I dont think you should worry about warranty at this point. The factory  can always repair it for you if there is  any problem



 Posted: Friday Jun 1st, 2012 09:46 pm
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auredor
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Hello,

I let it off for a while and it changed nothing.

By the way, it was not the capacitor that was hot but it is the regulator. I tried with a new regulator and it still doesn't work. The new regulator is getting hot also.
I measured the resistance between output of the regulator and the 0V => There is about 1,2 Ohms ??? I think theres is an electrical shortut !

What do i have to do? Does I have to return it to Singapour to repair it ?

Thanks.



 Posted: Saturday Jun 2nd, 2012 02:15 am
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ident
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Can you contact support@cytech.biz and send the serial number?
If it is under warranty we will replace with a new one. If not under warranty it can be repaired



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