Recent content by Desperado

Hello and welcome, here you will surely find very experienced people who will help you solve the problem. They've helped me many, many times, right Dave? ;) Ask Dave where you can download the Pettester bin file (provided you have the ability to burn EPROMs). Do you currently have EPROMs or...

I'm officially closing this thread, I've listed the Pet for sale on Ebay... there will definitely be someone able to repair it. I thank all those who helped me and who wasted time for me... I tell you that it wasn't wasted time because I still learned other new notions. A thousand thanks!

Because MAYBE we have a bad 138 or 139 ic?? :(

I thought I would find a new 6509 cpu in my Easter egg but unfortunately it wasn't there....maybe can I try with a 138 ic piggyback ?

Please Dave help me to repair this bad 710! I need to know if this cpu is good or die :/

Thank you all for the help and teachings you have given me... there will be other opportunities to learn how to use the oscilloscope. I'm sorry because I would have liked to understand the problem with this damned computer... but I don't have the skills to find the fault....in the end I am left...

sorry, is solded!

Hi, not again...Sid i solded on board...

not really..we have some integrated circuits in common.... I think it's not worth wasting any more time, given my equipment and my lack of knowledge, I think the time has come to raise the white flag. I think that i ll sell the computer as it is, there will probably be someone who can repair it :(

on the commodore 64 if the sid fails, it causes a black screen. If you remove the sid, the screen reappears!

thank you very much Eudi, but what is this test specifically for? If the sound is not heard, does it mean that the Sid is broken? Happy Easter to all !

So it's time to sad white flag? :(

You're right Dave, I don't think I can fix it. What I regret the most is that before deleting the EPROMs, it worked... Maybe we can try with the last attempt? I remember that Eudi talked about programming an EPROM to activate the SID...

the tracks are always the same and terrible... either this Nop is no good or the CPU is really dead :(

This is A0