3atariSTE

Have you swapped the mechanical? I had a problem in my IndusGT...the drive did not read. In other hands the head not moving. Step motor defective? NO...the problem was the chip U6 (UDN2541B) fault. I have replaced it with SN75437 and now, the drive is working perfect. :-)

Thanks for the info James. These technical knowledge should be useful to tjlaser for burning my eproms. :-) Maurizio

Hi tjlazer, yes, the eprom installed in my INDUS is AM2732A-2DC. I don't know the difference with 27C32. waiting for your reply thx

Hi James thanks for your reply.

Hi Tjlazer If you can burn the right rom version (v1.2) is not a problem for me. I will buy two Eprom from you. Let me know the shipping for the Italy. Or, if you want to come on holiday in Sardinia i will buy 5 or 6 chips. Maurizio

Thanks James for the .rom file. Do you have the possibility of burning the EPROM with 1.2 rom image? If yes, let mw know the cost. thx again Maurizio

Hi Larry, i have two IndusGT for Atari full working. The first have the firmware ver 1.2, the other ver.1.1 (I read that it is not perfect) So I'm looking for a EPROM programmed with ver.1.2....do you have a eprom burning? If yes, please let me know. Also I contacted Best Electronics for the 1.4 version, but i've a question: Is the ver.1.4 the last/stable firmware for the IndusGT? That's all Thx in advance

Thanks a lot for the info. I will contact Best for 1.4 version 😙

Hello all As the object i'm looking for IndusGT firmware version 1.2. Best Electronics have the ver 1.4..but reading in the forum it seems not be the last or stable version (or i'm wrong?). Can anyone help me? If anyone have the ver 1.2 (full working) please let me know the cost. Thanks in advance Maurizio

hi ppl I'm out of time since last post :-) but the GS error on Indus seems to be a common problem. Have you check if the head moves? If it does not move means the step-motor is not working. :-) In this case, the problem may be the UDN2541B (Quad NAND-GATE Power Drivers). If the I.C. is ok than may be the step-motor (replace the mechanics). Maurizio

Hi Stephen, thanks for your reply. U17 is 74HCT32. U22 seems to be equal to U20 and U24 (74LS74)....the HCT version is for TTL levels. So I think it is 74HCT74...but i'm not sure. Anyone can help me? Maurizio.

Hello ppl I'm repairing my Indus...the step-motor is dead (caused by the failure of U6 - UDN2541B). Of course I have ordered the parts (5x SN75437A). :-) But my question is another: I am seeing the mainboard and I saw an IC with the sign canceled The IC is U22 (CD74HC???).. Anyone knows the exact sign? Thanks for any help Maurizio

Hello ppls I'm looking for scanned hi res version (front, back, sides) for the box of the XG-1 light gun. Anyone can help me? thanks in advance PS: in attachment my front box for the XG-1. Yeah, i know it's not perfect but i like it.

You are right, I think the same! Just a curiosity: Can i replace the PROMS with EPROMS and burn them with "Donkey Kong Jr." code? Maurizio

Try inserting just the pcb into the slot without the shell. you may not be getting full contact. Chip side down. Only other thing might be poor receiver slot, or chips. Ok done...but the cart not works. I got several cartridges ALL woking. I think the problem are the chips, CO60340A-29 / CO17340A-01. Anybody know if i can found this replacements? thx Maurizio

Hello James The contacts seems to be ok, so i don't know what is the problem ( i think a bad chip). Please, give me a suggestion. Maurizio

I have tried with isopropyl alchol and head cleaner, but nothing...its not works! I will try to rebuild the contacts using varnish of silver...i hope to be luck. thx Maurizio

Hello folks I am new in this forum, my name is Maurizio and live in Sardinia (Italy). Well, just a question about the object. I got an old cart (Donkey Kong Jr.) but its never worked. When I insert the cart on my 130XE, its goes in "self test" screen. I check the cart pcb, all wires seems ok (i used a dgt tester). What's the problem? Bad chips? Thx in advance Maurizio