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Beolover SyncDrive: DC Platter Motor Replacement for Beogram 4002 and 4004 (Type 551x and 552x)

Late Beogram 4002 and the 4004 (Types 551x and 552x), which have DC platter motors instead of the earlier synchronous AC motors usually suff...

Sunday, March 19, 2017

Beogram 4002 (5513): RPM Trimmer Illumination Very Low

After restoring the PCBs of this Beogram 4002 (5513) it was time to address the very low background illumination of the 33 and 45 RPM trimmer scales. I removed the RPM trimmer panel and put it on the bench:
After removal of the light shields the bulbs can be accessed:
A closer examination revealed that the bulbs had been replaced at some point with non-spec units resulting in the too low light intensity. As usual, I replaced these bulbs with my SMD LED based implants:
Like all my parts they are available to other enthusiasts. Just send me an email or use the contact form on the right. They are direct drop in replacements for the light bulbs:
The design allows for putting the covers back in place:
The combination red and green LEDs of the replacements generate a warm incandescent-like light that not only looks authentic, but also properly illuminates the red scale hands of the RPM trimmer displays:
Beolovely! These displays are back in business!

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