Programmer hardware problem

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arash.ebadi
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Programmer hardware problem

Сообщение arash.ebadi » Пн мар 28, 2011 7:16 am

Hi ezo
I made my programmer and try to test it but none of address buss work correctly
I mean I do not have any voltages on pin A-22 to A-0
In addition, when I run the programmer only red led go on
Moreover, i have my 7805 so hot
I cheek ic vcc and they are 4.97v
Moreover, 7812 shows 12.5v
Please help me to solve the problem
Thank
arash ebadi

Ezo
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Re: Programmer hardware problem

Сообщение Ezo » Пн мар 28, 2011 10:40 pm

I made my programmer
is it ezoflash4v4 ?
try to test it but none of address buss work correctly
Check installed chip positions (pin1). Note 4015 all are not in same direction.

arash.ebadi
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Re: Programmer hardware problem

Сообщение arash.ebadi » Вт мар 29, 2011 6:16 am

ezo 4v5
all ics place correctly

Ezo
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Re: Programmer hardware problem

Сообщение Ezo » Вт мар 29, 2011 9:39 pm

Check visually programmer with magnifier under good light.
Get multimeter and check no shortages.
Attention on all Vcc lines ! Check no shorts on top layer lines between IC pins.

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