doc

I've had my Hypertech EPROM in the UV eraser for about 24 hrs total. First try was about 1 hour. Then I tried to program it. The pocket programmer on a blank check said that the EPROM was not erased.

I checked that the light bulb comes on, it does. I put the EPROM back in the eraser for about 4 hours on each side and it still did not erase according to the procket programmer.

This EPROM has two circular spots on both sides, but no square or rectangular window.
I did remove the tag on the top side of the EPROM.

What can be wrong here?
TIA
doc




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'87 L98 TPI IROCZ, AFR190 heads, 3.70 gears, ZZ9 cam, 2400 Art Carr TC, SLP 1 3/4" headers, SLP cat-back, no cat, no AC, no MAF screens, Accel manifold base & SuperRam, Edelbrock double roller timing chain, MSD ext coil & distributor, trans cooler, 52mm TB with airfoil, TB coolant bypass, AFPR(58psi), K&N filters, Hotchkis lowering springs, Car-Pro custom chip, Lay Ind. ram air kit, 265/45R16 Kumho V700 tires.
ET 13.39sec @ 107.21mph
'90 Eagle Talon AWD, no rust thru 9 winters
'99 Camaro SS, red, 6-spd, T-tops, Mcleod clutch, Pro 5.0 shifter, MAF processor, Direct Flow airlid, K&N filter.
313.7Hp & 320.6ft-lbf, ET 13.55sec @ 105.1mph
next mod: 4.10 rear gears

TRAXION

If there is no quartz window on the EPROM then it is not an EPROM ... but, a PROM. If it has no quartz window then you CANNOT erase it. Go to the link in my article all the way at the bottom that discusses how EPROMs/PROMs/EEPROMs work.

Tim

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• Program your own PROMs!. Read my article to get started!
• Research and Experiment before asking questions.
• This is not a chip store. Go to the classifieds if you want someone to sell you a chip or give you a BIN.

TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

Grim Reaper

I agree with Traxion; now "windo" means it is not a Eraseable EPROM. Sorry to hear that; but I am finding that many of these aftermarket "chip manufacturers" are very inconsistent on how they do the chips.

I know that with ADS some people have a removable chip, while others (like me) has theirs soldered in.

Time to "unsolder" the chips and replace it with a ZIF socket.

Grumpy