2 Fried PCMs?

[turbogtu]

My first (and second) attempts at flashing a custom os have ended in what seems to be catastrophic failure. The first attempt was on a pcm from an 02 camero. Reading the stock tune went fine. During the erasing part of the reflashing sequence, it reported that comms was lost with the pcm. Now I can't connect to the pcm at all?
Luckily I had a spare, from an 00 Suburban. So, I tried again. Read the stock tune no problem. During the reflash, same thing. WTF!
I spent two licenses and burnt two pcms....what am I doing wrong? Can I recover these?

V2 has bootblock 2.06.02 and firmware 2.06.12
using V7.5 build 88
Using my desktop computer and Bench harness with wall plug for power (strong 12.1V)...pins are right - it read fine.

Any Ideas?????

[mr.prick]

What's your battery voltage?

[turbogtu]

no battery used. V2 and pcm powered by wall plug....verified that had 12V.

[mr.prick]

I shoulda read the whole post.
How many amps is the plug rated,
someone was just asking about that but IIRC you don't need much.
Do you have a vehicle you can put them in to see if that works?

[GMPX]

If it quit during the erase part on a full flash and has not been able to reconnect then the PCM is dead. I am very suspicious of your wall plug, when the PCM turns on the erase/programming voltage inside itself it draws additional power, the fact that it failed at the same point on both times is no coincidence.

Now, whilst you might have had 12V, if the wall plug is not regulated you can bet the additional load on it during the erase would have caused it to produce a very noisy 12V that might have been interrupting the communications between the PCM and Flashscan.

What is the wattage / amp rating on the wall plug?

Cheers,
Ross

[turbogtu]

300mA...What is needed? Its a radio shack universal wall plug (adjustable from 1.5-12V @ 300mA). What do you recommend?
What your saying would make the most since...however it is the worst case scenario with two dead computers and no more licenses.

[turbogtu]

I do have a vehicle...but it's a c4 vette and I'm not entirely sure I have everything right in it yet.

[ChipsByAl]

You can always take the battery out of the car, get it fully charged and us it as a stable power source.
Al

[GAMEOVER]

You can always take the battery out of the car, get it fully charged and us it as a stable power source.
Al

Thats what I was thinking...

[mr.prick]

You can always take the battery out of the car, get it fully charged and us it as a stable power source.
Al

Kinda pointless if his PCMs are DOA.

I thought Flashscan could "recover" a PCM from a dead state tho.