Author Topic: [SOLVED]Bad power supply with high voltage.  (Read 6739 times)

kroutshev

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Re: Bad power supply with high voltage.
« Reply #30 on: November 16, 2014, 09:49:48 PM »
Hi Xavier,
 ok i have tested this "By pressing and holding INST+one of the left buttons", only "plop" and absolutly no FM sound ... here the picture of what we can see on the screen when i hold INST and left button :

kroutshev

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Re: Bad power supply with high voltage.
« Reply #31 on: November 16, 2014, 10:02:23 PM »
And for the spacer for the screen you can view the photo :
It's very nice from you to propose a screen, in regard of previous picture it seems that mine is out of order.
About MCU how can i know if it's ok ?
Thanks again Xavier.

Xavier

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Re: Bad power supply with high voltage.
« Reply #32 on: November 16, 2014, 11:02:30 PM »

I've just PMed you.

kroutshev

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Re: Bad power supply with high voltage.
« Reply #33 on: November 25, 2014, 05:21:23 PM »
Ok Xavier, with your new lcd it's better but now the problem is with my usb key. I have to find another one because the new one that i use is no compatible !!
The cer40 is in good state and don't need to be replaced.
But however i will pay the one that y have sent me in case of future problem.
Thanks again for your precious help !

Xavier

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Re: Bad power supply with high voltage.
« Reply #34 on: November 26, 2014, 11:18:37 PM »
Ok Xavier, with your new lcd it's better but now the problem is with my usb key. I have to find another one because the new one that i use is no compatible !!
The cer40 is in good state and don't need to be replaced.
But however i will pay the one that y have sent me in case of future problem.
Thanks again for your precious help !

So if that's the LCD only, i don't understand why you didn't get any sound.
Are you DAC workging ? Do you have sound now ?


kroutshev

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Re: Bad power supply with high voltage.
« Reply #35 on: November 28, 2014, 02:53:02 PM »
If my usb key is dead, i can have sound ?

Xavier

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Re: Bad power supply with high voltage.
« Reply #36 on: November 28, 2014, 03:01:39 PM »
If my usb key is dead, i can have sound ?

If you're USB Key is dead, the preenfm2 freezes with its display full of yellow squares.
If you can boot and don't get any sound, you may have damaged your mcp4922.

kroutshev

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Re: Bad power supply with high voltage.
« Reply #37 on: November 28, 2014, 09:08:15 PM »
achhhhhhh, in that case ... it seems that the mcp is dead too ...  :-[
i have to managed to find another one ...
Maybe other parts are dead too ...
« Last Edit: November 28, 2014, 09:20:55 PM by kroutshev »

Xavier

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Re: Bad power supply with high voltage.
« Reply #38 on: November 29, 2014, 06:59:00 PM »
I'm not surprised the DACs are powered by the 5V.
I can ship you 2 mcp4922 DACs...

Can you confirm midi work ?
Midi over DIN5.
To Confirm your 6N137 octocopler work.
A note is blinking on the display when it receives midi note on.


kroutshev

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Re: Bad power supply with high voltage.
« Reply #39 on: December 01, 2014, 01:38:12 PM »
Hi Xavier,
 i will test midi tonight, about DAC shipping, i think that i've got some of them in my stock ...
I will confirm you when i'll have checked at home.
Thanks again for your help !!

kroutshev

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Re: Bad power supply with high voltage.
« Reply #40 on: December 10, 2014, 11:30:51 AM »
Hi Xavier,
 my preenfm2 is reborn :-). I have received my new usb key and he has refound his voice !!
The DAC's were ok, no replacement needed !
Thanks a lot for you help !

Xavier

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Re: [SOLVED]Bad power supply with high voltage.
« Reply #41 on: December 10, 2014, 08:55:56 PM »

Good news  :D
Thanks for the update.