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SOLVED!!!!!!!!

Afted changing the little green LED, now I got correct ID, and I'm just programmed my first pm49FL004 device!!!!

Thank you!!!!

After transistor check I discovered that on collectors there are 0 volts with Vpp always ON and even if Vcc is ON or OFF. On the first transistor base there is 0 volts like previous, on the second transistor base (that is connected with first transistor collector) there is 0,66 volts with Vpp and Vc...

Ok, here the results : 1-Vpp ON ------- pin 32 -> 3,00 volts 1-Vpp ON ------- pin 31 -> 0 volts 1-Vpp+32-Vcc ON -------- pin 32 -> 3,5 volts 1-Vpp+32-Vcc ON -------- pin 31 -> 0 volts If I put a FWH/LPC chip in socket I got no ID (0xFF, 0xFF [---]), if I erase the process is completed with "Erase co...

So, while I'm searching 2K2 resistor, I noticed, just on top of the DIP switches, that there are two component missed, I don't know if this is correct, they are one diode 1n4148 and a 2K2 resistor! What are they used for? If I put a w39F020 on the PLCC32 socket on top of the FWH/LPC socket, all is w...

Ok here the results : Everything is similar to the guide (only a little difference 4,26 insted of 4,35) but main problem is that at data lines from pin 13 to 21 of the FWH/LPC socket I got some spurious voltage that go from 0,25 to 1 volt even if I click on "clear all". If I set OE-24 ON this voltag...

Hi, I already do this, I checked the FWH/LPC PLCC32 socket with "Test H/W", every pin, every signal. All is ok, I get 5 Volts when enable pin and 0 volts when disable, Vpp is 12,5volts. I not checked ZIF32 socket since I don't need it. Cleaned socket pins, no change. There is a particular priority t...

Hi to all, this is my first topic. I buyed a willem PCB50B programmer from ebay I got it to reprogram PC BIOSes chip , but I have problems.... The first time I connected it to my PC, when I installed it's software (0.98D12) at first run windows XP say me "The IO.SYS service is preset but driver cann...