Hi, tomorrow i send photo of my classic, yesterday i have installed the hdd, i have found a 1gb conner scsi disk from germany, formatted with patched hd tools and then I have installed system 7.1.1. But now i have a problem with stuffit 5.5 tools and decompressing game or other software on this machine, when launch stuffit system give me a message "unimplemented trap" and only way is restart system.
Then, after hardware restoring, and after my diodes error the monitor have an abnormal simpthom, when i turn on classic after few days i have a orizontal retrace line on screen, after about 2-3 minutes, the lines slowely going out and the image is normal, but i have noted, when hot, the contrast going slow to lowest level, after about 30 minutes the contrast stays stable but very darking screen, comprensible and usable but dark.I have regolated brightness and cut off in reaar of machine to have a good screen, but then if i turn on again after 2-3 days have a same problem, retrace lines and then when hot its going to the value setted with trimmers.
Why this slowdown of contrast and when hot stays ok? Another component damaged with short caused for wrong diode? I have see schematics and power to the flyback is from the lm317, i jave replaced it before my power output diode short, is possible damaged? I don't thing is the crt tube, because before the diode short not presented this simpthom, and the image is very good and clean.