problem with my EPIC

[ardhuru]

Hi,

In my schematic they are denoted R3 and R4. Anyway, if you have the original EPIC PCB, these two are the ones directly below Q1.

Alternately, you could trace them to pin nos. 12 and 13 on the 18 pin programming socket.

Regards,

Anand

[bitbanger]

Thanks,
My EPIC Plus currently has 1K resistors in for R3 and R4. By any chance did you mean to change the original 1K resistors to 2.2K? I am guessing the idea is to have "stronger" pull-ups right? I guess I'll stick with what I have. Maybe that is what the "plus" part was all about.

[ardhuru]

Hello,

No, if you already have 1 K pullups. dont bother changing them to 2.2K. That is unlikely to help. In this case, I suspect the problem is elsewhere.

Regards,

Anand

[buddhafragt]

you can try to change the 7404 chip.
sometimes he is destroyed because of over voltage at the LPT port.

[elankart]

Hi I'm having the same problem, I get an error message saying "Code error at..."... I tried changing my adapter and cable... But nothing worked..I'm getting another error message "Target device does not match the selected device".. I'm using pic16f84a... But if I select it frm the list I get this erro message.. If I select pic16f84 I'm not getting any kind of problems(but still I'm not able 2 program my uC)..

Plz I need some help, its been months since I've bought this programmer, but still I'm unable to use it...

[skimask]

Hi I'm having the same problem, I get an error message saying "Code error at..."... I tried changing my adapter and cable... But nothing worked..I'm getting another error message "Target device does not match the selected device".. I'm using pic16f84a... But if I select it frm the list I get this erro message.. If I select pic16f84 I'm not getting any kind of problems(but still I'm not able 2 program my uC)..

Plz I need some help, its been months since I've bought this programmer, but still I'm unable to use it...

How many of the troubleshooting steps listed at MeLabs have you tried?

[elankart]

nearly everything..

[ardhuru]

Hi I'm having the same problem, I get an error message saying "Code error at..."... I tried changing my adapter and cable... But nothing worked..I'm getting another error message "Target device does not match the selected device".. I'm using pic16f84a... But if I select it frm the list I get this erro message.. If I select pic16f84 I'm not getting any kind of problems(but still I'm not able 2 program my uC)..

Plz I need some help, its been months since I've bought this programmer, but still I'm unable to use it...

Like you said, you have 2 separate problems here. The first seems to be a harware problem; let look into that later.

The second one, I suspect is this; are you using a statement that defines the PIC within your code (as in @ Device Pic16F84A .... ) with Microcode Studio? Chances are you have defined a different PIC in the MCS option of 'Target Processor'. I mean, your code might be specifying a 16F84A, but MCS is looking for a 16F84 (or the other way around).

Give us a feedback on the above, and then we'll move on to the hardware issue.

Regards,

Anand