EZoFlash форум

have a look at these ; 0V: A13, OE --> U5b , cd4015 pin 4 // U12 pin2 3V: A9 --> U5a , cd4015 pin12 3.5: D1 --> U1 , cd4014 pin6 3.8V CE --> vcc1 , verify icsp connector pin 2 from top should be the same voltage What chips are these? There's multiple 40145s and they're not labeled on my board.

[quote="Ezo" Seems programmer logic IC damaged. What are Test H/W results ? Check boxes one by one and measure voltage on related ZIF32 pin[/quote] I measured the voltages in test mode. Most were normal at about 4.3V, but some weren't: 0V: A13, OE 3V: A9 3.5: D1 3.8V CE Do you know what chip might b...

I went ahead and flipped the transistors, and replaced the other two nearby with BC327 in the other orientation. This fixed the VPP and VCC lights. They turn on and off normally, and i get 25V for VPP. Also VCC was still 11V, regardless of the jumper settings. I replaced the 7805, and now VCC is cor...

I've replaced the transistors and inductor, but it doesn't seem to be working right No matter what the parallel settings, the green and red LEDs are always on. Did I put the transistors in the correct way? I put the flat part facing up, just like the old ones, however the silkscreen kinda looks like...

Some rules. 1) power supply only external , 9-12V >400mA. No USB connected. 2) change coil (resistor type) to coil with saturation current >500mA, sample attached 3) change programmer both voltage switch transistors from BC557 to BC327 4) for 2732 apply Vcc=5 Vpp=25V. SW select 2732, change twp fro...

Farid писал(а):set VCC jamper to 5.6 or 6.2 then use USB

What? I need 25V to program this chip. USB won't work.

I'm using version 0.97ja, using a 12V supply. The chip is a 2732, which takes 25V vpp.

I'm not even trying to program it yet, I'm just testing my WIllem with the Test H/W function. So far it's not working, both VCC and VPP are about the same regardless of jumper settings. Any other ideas?

It looks like user DL from the old Willem forum had a good solution, anyone know if he's still around on these new forums?

Hi, I'd like to program a 2732 EPROM with my Willem 3.0, but I've read this won't work because the Willem can't output the high 25V vpp. Does anyone have instructions to modify it to do this? Also, right now VPP and VCC seem to read the same, and are dependent on whatever power source I've using. If...