Zephy JTAG error 0021 after GPU replacement

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Zephy JTAG error 0021 after GPU replacement

Postby Phils » Sun Jul 10, 2016 7:01 pm

Hi everyone, I replaced a GPU on a Zephy JTAG console. Everything went well from lifting to attaching. I'm using a hot air station and a T8280 as under heater. But on power on its giving me error 0021 after 2-3 seconds. Previously the console had e74. I have reflowed two more times but it is still the same. The GPU is a new one bought on aliexpress. Ohm test before attach gave 2.2 Any help will be appreciated thanks.
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Zephy JTAG error 0021 after GPU replacement

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Re: Zephy JTAG error 0021 after GPU replacement

Postby we3dm4n » Tue Jul 19, 2016 8:50 am

Wrong GPU model or GPU dead.

Pls give the model printed on gpu die (X8 ...)
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Re: Zephy JTAG error 0021 after GPU replacement

Postby Phils » Tue Jul 19, 2016 5:21 pm

The model no is X810480-002. Ohm test on board reads 2.1 Thanks.
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Re: Zephy JTAG error 0021 after GPU replacement

Postby simlol » Sat Jul 23, 2016 9:42 pm

Phils wrote:The model no is X810480-002. Ohm test on board reads 2.1 Thanks.


65nm gpu,not fit to zephyr
you need 90nm
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Re: Zephy JTAG error 0021 after GPU replacement

Postby darrin » Sun Apr 15, 2018 8:14 pm

simlol wrote:
Phils wrote:The model no is X810480-002. Ohm test on board reads 2.1 Thanks.


65nm gpu,not fit to zephyr
you need 90nm
your wrong thats correct gpu for that system he has a bridge under it
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