MESA 7i76 burnout

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22 Mar 2017 13:10 #90069 by HalaszAttila
Hello,

i am in big trouble. My lathe is with mesa 7i92 + 7i76. And when i turned ON the machine, one of the outputs octal driver ICs (NCV7608) is exploded.
The machine is works before, and i dont know the reason of failure.
I desoldered the exploded IC, and tested with just one, the Linuxcnc starts and dont show error message, can read the inputs, but the outputs (0-7) does`t works.

Can this card work with just one output driver IC, or PIC can detect the missing I2C device ? or maybe the cards PIC mcu broken?

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22 Mar 2017 19:56 #90085 by PCW
Replied by PCW on topic MESA 7i76 burnout
Both output chips share the same SPI interface CLK / DIN / DOUT signals
so if one of these pins got damaged the other output chip would not work

Its also possible that the PIC firmware senses a problem as a overload has not enabled the chips

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22 Mar 2017 20:07 #90087 by HalaszAttila
Replied by HalaszAttila on topic MESA 7i76 burnout
Ok i will try to buy and change two ICs.

I know that the warranty does`t active for these failures, but just to interest does anybody repair mesa cards?
I have broken 7i77, 7i84, and now one 7i76.
Can i send for repair, i am from Europe (Serbia).

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01 Aug 2019 20:41 #141146 by svajus123
Replied by svajus123 on topic MESA 7i76 burnout
Hello! If it is still actual I can repair these boards. Including fpga replacement and programming.

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09 Aug 2019 07:34 #141719 by HalaszAttila
Replied by HalaszAttila on topic MESA 7i76 burnout
Hello,
yes it is actual yet. I have one 7i77 and one 7i84 broken cards.

Where are you from?

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09 Aug 2019 12:13 #141752 by tommylight
Replied by tommylight on topic MESA 7i76 burnout
He is from Lithuania.

@Attila
Did i get an e-mail from you a while back about an Elumatec ?

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09 Aug 2019 13:59 #141778 by HalaszAttila
Replied by HalaszAttila on topic MESA 7i76 burnout
@svajus123
Can you give me your email?

@tommylight

No i did n`t contact you about Elumatec machine.

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09 Aug 2019 16:24 #141793 by svajus123
Replied by svajus123 on topic MESA 7i76 burnout
This email address is being protected from spambots. You need JavaScript enabled to view it.

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09 Aug 2019 17:27 #141798 by tommylight
Replied by tommylight on topic MESA 7i76 burnout

HalaszAttila wrote: @tommylight

No i did n`t contact you about Elumatec machine.


OK.

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