Posts by neonhomer

Caution: Non registered users only see threads and messages in the currently selected language, which is determined by their browser. Please create an account and log in to see all content by default. This is a limitation of the forum software.

Also users that are not logged in can not create new threads. This is a, unfortunately needed, counter measure against spam. Please create an account and log in to start new threads.

Don't Panic. Please wash hands.

    Well, I did manage to get my oscilloscope out but starting to look at the pins and my old eyes... I didn't think it would have been a good idea to start poking around on the card.

    So I took a little Deoxit to the contacts on the expansion bay and cleaned them very well and then applied Deoxit Gold to the contacts to keep them clean. Did the same to the 1233n card.

    Plugged it in and nothing... I reset the machine and got sidetracked from the machine. I come back and it was in Workbench and showing that the 1233n was working! YAY!

    So... since I'm always looking for the best performance, I'm wondering if it's worth the money to send my card back and have the IDE Speeder option added.

    This wasn't packed in that package, but was in a anti-static bag wrapped in thin foam.

    I read through that thread about the CPLD service... it is why I'm trying my hand at troubleshooting. I'm a fairly good hand at soldering, but I'm not sure I'd trust myself swapping one of the Xilinx chips.

    I brought my o-scope home yesterday but will have to wait until this weekend before I have time to disassemble my 1200 again for testing.

    I could probably save myself a lot of time and just ship it over to be fixed, but I want to try my hand at troubleshooting. I'm a follower of Louis Rossmann and watch his videos on MacBook repair. I'd love to be able to at least say I found the problem with the card...

    The card was sold to me as working from a reputable seller, so I don't have any reason to suspect that he sold me a defective card. The card was boxed well, packed in it's original box and then inside another box. The packing in the original box wasn't the greatest, so there could be shock damage.

    I will do a little probing and see what I find.

    Yeah, I read later that the FPU was not a good idea, and even so it's not commonly used.

    The power supply is one of the switching A-500 supplies, the one without the huge transformer. Rated at 4.5A on the 5VDC rail. I'm going to go pick up my oscilloscope from storage and check the supply for ripple. I visually inspected the inside of the supply and found no leaking caps.

    So I thoroughly inspected the card connector to board connections - noticed nothing bent or out of the ordinary.

    I put the card back in the machine and backed the card out slightly - that didn't help. System still does the same thing.

    Is there anything else I can check before condemning the card? I'm trying to eliminate everything I can before it makes the trip overseas for repair... though it would be nice if it came back with IDE speeder added to it! 😆

    After being out of the Amiga world for a long time, I finally acquired an A1200 in pretty decent shape (case yellowed, but in good shape otherwise) and it works as it should. I also acquired an ACA-1233n (I believe it is a -40), code gT3fb. I went to put this in my system and... nothing. The power light comes on but nothing else happens. I tried cleaning the expansion port card edge with a little Deoxit. It didn't help.

    So I did a little reading around and found where the Xilinx might fail and to measure the output of the 3.3V regulator. A good solid 3.3V DC. The chips on the board are barely even warm. Also checked the power rails (5V, +12V, -12V) and they were all right on.

    So I am assuming there is something wrong with the card, and I do not have another machine to test it on - So it will have to be sent for repair... or is there anything else I can check before packing it up and sending it across the world?

    Also, since this device doesn't have the FPU on it, is it possible to have this added if I do have to send it back?