CD 104 Tracking problems
A CD 104 that’s lost track. I see the player has already been serviced. I just put in a working servo board, and that helps immediately. The player runs fine, so the problem is...
Processors Masked Rom Dumps CD960 , CD94 (mk2) ,CD 12
Today I attempted to dump a the CPU mask_ROM’s s from a CD960, CD94, CD12. Servo CPU : 80C51-F-121 FTS CPU :80C51-F-105 Feature CPU : 83C154-69 , in some service documantation also shown as...
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...
CD 94 Mk2 Digital out only
Check for Bitclock, Wordclock en Data all good , Tested Analog audio path, injected audio , that is working , problem must be in the TDA1541A’s ...
CD 303 repair and refurbished
The CD 303 has difficulty turning on and when it’s on it won’t read CD’s First look inside Some one has here before and marked the ffc connectors I have never seen these...
CD 207
The CD 207 would hum, unfortunately not reproducible on my workbench , Cleaned Volume control headphone. Power Supply Capicitors have been replace before What happend here ? Update 2025-11-25 Oeps, something...
Proceed PDT 3
CDM 1 Mk2 drive SAA7310 CD Decoder PCF 2705P SPDIF Servo Processor MAB 8441P T164 Subcode Processor 8461P W105 High End Mods Placed new Vishay Caps Decoderboard ...
CD 960 Repair and refurbish
This CD 960 , needs some TLC , Tray problems , play button not functional , light above play button needs replacement Quick test, I put the CD manually on Spindel , it can...
TDA1541(a) Synced TikTak
I regularly get these questions , Can my CD player sound better, I read somewhere on the internet…… Can a Grundig DEM modification be done easy on my TDA1541(a) Player Can i replace the...
Comparison TDA1541 Versions
Comparison of 4 Version TDA1541 TDA1541 HHH8645, TDA1541s1 HHH8649, TDA5141A r1 HSH8749 TDA1541A HBH9751 ‘CD as a DAC” Digital input based om WM8805 and TDA1541 “DEM Synced to Word clock and with C0G (NP0)...