Erasing Stock Chips

[burn]

So I have a whole slew of stock MEMCAL's, and its getting to be a PITA replacing the stock chips for AT29C256 chips. I know that the stock chips are UV erasable, but I dont have a UV eraser. Is there any tricks I can use to erase the chips? ie: welding flash / sunlight, etc?

How long of exposure to UV is required?

Can I then just re-burn the chip with my Willem EPROM programmer or is there a different method for these type of chips?

Do I just burn the chip as if it was a AT29C256 that I was writing?

Thanks!

[TGPilot]

The Willem will allow you to program just like a 29C, just make sure you select 27C for the proper dip switch settings.

Small UV erasers can be had from time to time on ebay for a decent price. Never tried a welding arc might work...but putting one in sunlight would only take about 2 weeks to fully erase one without possibly having a corrupt chip.

I know what you are saying about swapping the 29C into a MEMCal though...gets pretty boring after a while! I do like the ease of erasing the 29C compared to a UV eraser though. You know for sure when a 29C is erased. 27C can be a crap shoot sometimes.

[burn]

The Willem will allow you to program just like a 29C, just make sure you select 27C for the proper dip switch settings.

Small UV erasers can be had from time to time on ebay for a decent price. Never tried a welding arc might work...but putting one in sunlight would only take about 2 weeks to fully erase one without possibly having a corrupt chip.

I know what you are saying about swapping the 29C into a MEMCal though...gets pretty boring after a while! I do like the ease of erasing the 29C compared to a UV eraser though. You know for sure when a 29C is erased. 27C can be a crap shoot sometimes.

Good point. Its just a PITA. Ive been selling my tuned chips, and im doing like 5 chips a week, and the only thing that slows down my turn-over is removing the stock chip / soldering in the new chip

Damn lazy GM, why couldnt they just use 29C's stock in their memcal's. lol

[SScavy]

Not to bring this subject off topic, but I just picked up a kit from GMPCM with the burner all software, aldl, memcal etc. The memcal has a socket soldered in instead of a straight at29c. It's EXTREMELY convenient as I now have 5 at29c's that I can program and test and swap out all the time. You should try a set up like that. It seems to be the way to go.

Only problem i'm having is tuning the darn things. I dont know if i'm smart enough yet lol and no one seems to want to help.

Mike

[burn]

Not to bring this subject off topic, but I just picked up a kit from GMPCM with the burner all software, aldl, memcal etc. The memcal has a socket soldered in instead of a straight at29c. It's EXTREMELY convenient as I now have 5 at29c's that I can program and test and swap out all the time. You should try a set up like that. It seems to be the way to go.

Only problem i'm having is tuning the darn things. I dont know if i'm smart enough yet lol and no one seems to want to help.

Mike

few things:

1) why in God's name did you give that jackass @ GMPCM your business?! He has screwed countless ppl over, and will do it to you soon too.

2) its not a matter of being able to rewrite the stock chips. I actually made an adapter so that the MEMCAL can plug straight into my programmer without removing the chip from the MEMCAL socket. This works great because it allows me to read a stock chip before I rip it out to replace it with a 29C256 chip. Heres a pic of it:


3) for your tuning issues... Im sure your trying to use GMPCM for your tuning, but it is littered with errors. cut your losses and switch over to TunerPro.

[Fierobsessed]

$10.00 and you know where to get it.

[ryan.hess]

Where do I get it?

j/k... I've got to get one of those. In the process of tuning, I've burnt probably close to 2000+ chips... Each time I remove the memcal, remove the memcal cover, remove the chip, program the chip, put it all back together, etc...

[burn]

$10.00 and you know where to get it.

thats exactly what mine is, except I made it myself. I didnt even know moates made them until after I had made mine. lol

[burn]

Where do I get it?

j/k... I've got to get one of those. In the process of tuning, I've burnt probably close to 2000+ chips... Each time I remove the memcal, remove the memcal cover, remove the chip, program the chip, put it all back together, etc...

do u use a zif socket adapter tho? thats what moonwell does too... the nice thing with this adapter is that you can read a stock chip thats soldered into a memcal pretty easily.