Sansui CD player CD-220 backlight Replacement
ID: 204983
Description: The Sansui CD player (20yrs old?) would play...
Steps:
- Shows general view of CD player (after repair with illuminated display working). The display initially could only be seen by shining a torch or flashlight at it.
- Shows inside of CD player with cover removed after undoing 5 screws (2 each side and 1 at back).
- To remove front panel we need to undo lots of electrical connectors (green arrows). You can just wiggle these connectors apart, but I play safe and use a fine screwdriver to lever them out and bend back the clips slightly. Note two connectors are the same so mark (and photograph) them for correct reassembly.
- Undo the two screws holding the power switch and remove it from the front panel. Undo the 6 screws securing the front panel (2 top, 4 at bottom) and lift away.
- First image shows rear view of front panel. Second image show enlargement of the display board.
- Red arrows show the soldered-in leads of the three incandescent lamps in series. If you have a multimeter you can tell which are broken (open circuit) and which are OK (14 ohms).
- Remove the solder with pump or solder wick (I use very fine copper wire from scrap cable with some flux). These bulbs can be fiddly to remove because you can't take the board out due to gluing, but you can bend it up slightly by loosening the plastic clips (blue arrows).
- There are no markings on the bulbs. The supply voltage to them measures 27V ac (using a multimeter) direct from the transformer. As the three lamps are in series, that's 9v per lamp, The nearest I had in my tool kit was 12v lamps for car dashboard switch indicators which claimed to be less than 1W (and had a cold resistance of 36ohms) which worked.
- Image shows two of the bulbs having been replaced (orange arrows). Note: I found it easier to push the leads from the outer surface, then bend the lamps into the cavity as the lamps came with long leads.
- Originally there was black adhesive tape covering the holes for the lamps, but I left them open to allow more cooling (you can now just see the light bulbs when changing CD's but such a minor inconvenience).
