Pinball freak

Thanks, but luckily the CIA sat in 2 other ic sockets wich had a switch so 2 pins were soldered from one socket to switch and also on the next socket, so if you switch it probably made the external drive as first boot drive. I guess.. Because when i bought it, it had a external drive. So the pin broke off from the last ic socket. Also the drive does not fit firmly in the amiga case so that is probably the reason i guess, in that time there were no goteks. But i am going to fix that. Other question, what is the best way to remove the rusty corrosion on the metal plates in the amiga, because it was on a dry place but it also was not airtight all these years, so humidity had it chanche to do it's work. I do not want to use steelwool. The guy wich i bought the other one from uses baking soda... I even want to try elektrolysis, because i have a lab psu.

Yes, it was pure luck honestly. In the end i probably would have find it but that could really take a while.... I will order 2 new sockets, for gary and the even CIA. Will be cleaning the keyboard and casing, and relive my youth...

Holy crap, It's Alive, it's alive ..................... hell yes. Well, here it comes, first of all thanks guys for your support and help with the reply's. My even cia had some sort of mod switch , as i read that the Amiga , i think you guys mentioned it can work without it, i plugged it out of the system. And then i saw that the soldered 40 pin ic socket had a pin in it, yep it broke off, argghhh bugger. So i tried it to peel it out with a needle, but it only got deeper. So now i had a problem, still have, so will have to solder a new one. Hoping to get the pin out, i started tapping on the back, hoping it would fall out, did more tapping as it didn't and than , blam on the table... Hey Gary what the hell do you do there ? Why the hell did you fall from the socket Gary, i did get all chips out about 5 times last 2 weeks, to check them and to clean them. So I put the row of pins to the outside, that Gary got all snug in his socket. And there it was, a steady red led, NO WAY... So i connected my floppy, yep booting it.... Hallelujaa.... Damn this feels good Wish i had a working cable.... btw , anybody knows if this is a mod or a fix ?

OK, swapped over the Fat Agnus and the Paula, same issue on the bad board. So not much to do now than wait for the parts and the Diagrom...

Yeah, as i mentioned in a post before, look here above, he swapped is own mobo in this machine to get me a working one. Only it was a rev 6. But if it can't hurt and the rev 5 want's to work with the 8372a , i can tru to swap them and look what happens. It is just now, when i was busy with the leds on the keyboard i noticed they feel very different from the new Amiga. After looking the parts numer up on the internet it seems i have got the famous Chicken lips... never knew...

Ok never mind about the led lights, on the underside it has broken traces wich need to be fixed ! So now an hour later, i can say i fixed that problem, the power led is working again

Well, spent some time with the 2 boards today. I swapped over some hardware and came to these conclusions, because i am still waiting for the new RGB scart cable from england. What we know is that the bad mobo has green screen, caps lock hangs over 10 presses. And the keyboard has no led lit up. So i swapped the keyboard to the working amiga and there also the leds do not lit up. So, on the dead amiga with the working keyboard from my good amiga i get the power light and it is blinking 10 times with one long. From what i have read on the internet from people had the same issue it always came down to, Or Paula, Fat Agnus or bad ram. My question, can i swap the Fat agnus 8971 wich i cleaned as mentioned in the Amiga Rev 6 to see if it works ? Or does the rev 6 have issues with that trype ? I also checked my floppy drive, and in the other machine that functions properly, but it doesn's sound as good as the one that is sitting standard in the machine, so needs some cleaning i guess. Should i swap Paula in the working machine to see how the working machine responds ? What about the dead leds in the bad keyboard, where to look first ? ( see next post ) Thanks !

Mmmm, maybe mu fat agnus is in worse condition than i hoped. It seems someone did some damage on the corners probablt with a screwdriver. It could be me in the past, but i can't remember. However i will upload some pics.

Very interesting link you gave me. because mine suffers from this i think: When the Caps Lock key is repeatedly pressed approx. 10 times, the Caps Lock LED turning on and off each time indicates the CPU is correctly reading the CIAs. If the Caps Lock LED sticks on or off, the CPU is not servicing CIA interrupt requests. If i want to figure things out, now i have 2 amiga's and i do NOT want to f#ck things up, is it best to test the CIA's in the working machhine .... or doesn't it matter and can in plug in the good ones in the dead amiga... I do not want to blow a good working chip. So my guess is to test the dead amiga ones in the working one ?

Well, as i am not familiar with the screen color codes, i would say Green. It is a deep alien snot green So i am thinking in the direction of bad ram. Problem is that i cannot recall the day it died on me, maybe it just died when i wanted to play on it. As curious as i am, maybe i started tinkering with it and in my mind the cable that was loose at the floppy or came loose when i was busy with it that time stayed on my mind all these years after. As for the fat agnus i have a question though, i have the special tool that is needed to unplug it, i took it out and on the other side the ceramic is somewhat abused, because i can remember my mom and i have brought it in in the far past for another repair, wich is not the root of this problem because it perfectly functioned after that. But the sides where the agnus can be pried with is somewhat not chipped i would say but it has some marks. I know from AMD cpu's in notebooks that if the core is chipped it is broken, however how does it work with an older chip ? Any thoughts about that ? Thanks.

Update, Well i went back with the new Amiga to the guy i bought it from, it really bothered him this happened to me and he would do everything to fix it. It was a green screen that he had. So i said, from what i saw on the internet people had or problems with ram, paula or fat agnus. He has tested, Agnus and Paula, they worked in another machine. So he had another solution for me, he took his own A500 rev 6 and put in an Agnus 8372a because he said the 8371 from the rev5 would not work in the rev 6???? Did not look this up yet. So he came over to bring me the rebuild amiga, we tested it here and copied some disks for him, so very pleassed with that solution. He certainly did not sell me a bad machine on purpose, so Kudo's to him ! Also he bring with him the 520 composite box so we could test my dead board, and i do get a bright green screen and not white. So probably this also could be a memory problem? Would that be possible or should i always have a working led lit up ? Sunday i will open the new Amiga and check how it looks. I was surprised to see that the diskettes i tested are still working after 25 years of storage, in their diskette box as you all know them, however safe from dust and always nice and dry though.... Nostalgia for the win (speedball 2 ), at least when i get my new cable, i will have a proper working A500 rev.6 now. Also the extra ram expansion card from my old one isn't in a bad shape either, it has a GP battery and did not really leak. I will solder it off and replace it with a button power cell wich i also ordered. Greetz...

OK, i ordered some stuff online, new cable, Diagrom, and some other stuff. I will wait first now, because without any image i shoot in the dark. I read online that some other people also have had the white screen and solved it with another cable. When i have image and have the proper color that will maybe help to point towards any fault. If that isn't the case, i will rely on the diagrom and connect it to a pc and read it out with putty. Thanks again for reply's !!!

This story is getting weird. The Amiga wich i bought yesterday, seem to have died. As is did not get any picture either, i just wanted to see what it did with my old diskettes. It started to load them but then the power light went out. Tried some other disks, sometimes the machine was not responding. So after a few times, i just shut it down, after supper i just wanted to try again, only the power supply it comes with and tested with i used, not my own. And it just is dead, well, no, it gives me the 10 power light blinks, and then the reset blink. So now i got 2 not working amiga's, if you look at the second picture the fat agnus has one pin that does not look good. I will go back to the seller and he will have a look at it, as he seemed to have worked on it. Ughhh.... What a nightmare.

OK Guys, First and foremost i want to apologize to you for taking time of you before checking this out first. As i mentioned in the first post, i did not know how well this cable works..... Well, i bought a nice working Amiga 500 rev.5 yesterday, the guy showed it to me working. He told me he fixed it because he bought it more than 20 years ago..... And it was not working. I asked what was wrong, one of the legs of a chip was broken, i do not know wich one. But again the amiga booted fine, all lights working Caps lock has a green led, where mine has a red .... Did not know they used several colors for that. Now, today all happy i was eager to get some nostalgia hours to play me old games.... hooked it up, fired the thing..... same white screen. Nooooooooooooooooooooooooooooo arghhhhh. Can't tell you how embarrassed i feel right now, so truly sorry for this. But yet again, the mainboard is still dead, that hasn't changed. At the end i will show you pics with my board, the one completely dissassembled, and the amiga open i bought yesterday. however both rev 5 , there seems to be many differences. But again, i haven't touched an amiga for over 25 years or so. So bare with me, i am again really noobish, have to learn a lot. The question, i have an older 32'' LCD TV pal with, amiga's also pal, if i buy online any Amiga rated rgb to scart cable > will this always work ? Or does the tv have to be a match like monitors have to be 15hz ? I found this online : http://www.pavouk.org/hw/en_rgbscart.html I opened my cable at the rgb side and found out that the cable that i have found with my amiga stuff has only 5 wires going to the scart AND it seems that the audio cables are coming from the scart end and not the rgb end. So i have no clue where i did get this cable from or if i ever used it, because as from what i can remember is that i have hooked my Amiga 500 in a amiga monitor... wich i do not have anymore.... ugh. So here are the pictures, now i am first going the buy me a decent cable, then we will see what colors the bad board will give.

And to add to this, on the first four, count from the left so first is black wire i measure a steady 5.24 volt on each. As i look at the diagram, is that normal ?