X-Prog M

[mashupishu]

Hi again, I did some measurements on the board.

As Zmann says on post #611 (page 41), I checked the IRF7316 having when the programmer is idle 17.9v on pins 1,2 and near 0v on 7 and 8. Also 12.3v on 3 and 4 pins and near 0v on pins 5,6.

When I hit read on device programmer desktop the outputs of the two mosfets seems to be ok, near 18v on pin 7&8 and 12v on 3&4. The bi-color led starts green and then red, and then a vibrating sound appears until the window "Device is silent" apears and I close it. While that window is open the voltages are which I said on the mosfets outputs also the vibrating sound.

I had observed too that some components get hot, not very hot but very hot for that short working time. They are marked magenta on the attached picture. What component is under the question mark?

Also it seems that the dc/dc isolator is not tightly soldered, I'm going to check that. And as I said in a previous message the capacitors under the lm317 are 35v rated, maybe any is broken?, I really don't know.



Have someone any idea about what will the problem be? (I'm trying to read a 95160 eeprom (also happens with a 95080, that was successfully read last week (no noise on the box).

Thanks in advance for your support.

Regards Machu.