CD 100 Servo and Sub-Code CPU ROM backups
Some time ago i had a development F 8421 Compact Disc Player Handmodel nr. 85 on my workbench , The player had two development MAB processors and ROMS chips , i made a backup...
Some time ago i had a development F 8421 Compact Disc Player Handmodel nr. 85 on my workbench , The player had two development MAB processors and ROMS chips , i made a backup...
This CD 100 in Mint Condition has difficulty with turning on and when it’s turn on it won’y play. First inspection , i see broken Solder joints , aging ? After some maintenance...
After tweaking this CD 100 has no audio output anymore. “Bram could you have a look for us.?” Nichicon Fine Gold Caps Muse Audio Grade OpAmps :Datasheet MUSES02 , Jupiter Audio Grade Capicitors...
Tuned CD 100 won’t play anymore , if i can take a look 😉 HF is missing There is signal on output’s of the NE5514, Focus point...
If i could have a look at a wrongly wired CD 100 After Recap , Disc is not reconized anymore. Checked the Laser , it’s fine 68µf replaced bij 47µf + 22µf The power...
This CD 100 is still not working after severeal repair attempts by others , If i could have a look. First check LM317 for +5 volt gets very hot. LM337 for -18 volts gets...
Problem Found , bad Capicitors and the LM337 for -18 Volt was Faulty, it was only -12 with ripple causing the hum Audio without distortion : Playing audio...
CD 100 repair repaired , Problem : Clicking, Skipping, Interruptions, etc. No Audio Some nicotine Sub. 29515 88 bis ?? Early version CD 100/00 servo processor MAB8420 C006 and a Mercury Time Counter...