PICKIT2 problem "Verification Fail"

Thread Starter

pekka123

Joined May 18, 2017
4
Hello there!

I try to find fans of PIC-micros and Pickit2.
I have some problem with my clone Pickit2. I have also original PICKIT2 and PICKIT3 (because some PICs do not program any more wirh PICKIT2).
I have made my PC Start device (http://remotesmart.wikidot.com/pc-start) some times, but about two days then PK2 says after programming "Verifying Fail".
And it really program badly to my board, I tried my software.
I tried to start my PC (Win10) again, no help.
Then I tried with old XP, no help.
Then I tried to change my PIC (PIC16F88) at my board, no help.

Then I tried with original PICKIT2. Yes, it worked ok. I programmed without power.

Then I open PICKIT2 (fail one) and using Tools/Troubleshoot I tested the PK2. Everything was right.
Then I looked the Tool/Calibration and it seems to be right (4.00V).
I donwloaded a new operating system, no help.

In the programmer there are two 8 bit memory chips (i2c 24LC512). Can they be somehow wrong?
There are some electrolytic capacitors also, is any body found them faulty?

The device is only two/three years old.
Also I looked the 5 pins to CPU, but they seemed right.

The programmer chip PIC18F2550 can be also bad, but it accept a new sowfware.
Can sombory suggest other methods?

Pekka Ritamaki
 

Thread Starter

pekka123

Joined May 18, 2017
4
Hey again.
I find the PICKIT2 probem (Verification Fail).
It was a capcitor C15 (47uF).

When I measured it, it was shown "no capacitor".
When I take it open, the other end of the capictor was cut.
I am not sure it it went cut, when I open it, but after I replaced it with 10uF capacitor the programmer worked perfetctly.

The only thing was that I used normal capacitor, not SMD.
I must add a tape to other end of PICKIT2 to keep plastic cover on the place.

Pekka Ritamaki
 

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