BeoGram 400X
Replacement Sledge Motor for the BeoGram 4000
With some help back in 2021, I found two possible replacement sledge motors for the BeoGram 4002 — one from Maxon and one from Portescap, where the latter is the cheapest option (50 USD versus 75 USD).I bought the motor from Portescap and did some...
BG4002 PCB adapter for reservoir capacitors
I am currently restoring a BeoGram 4002 type 5513, and even though the reservoir capacitors usually are within specifications, I replace them to avoid impending issues. The setup in the 5513 is relatively unique since it consists of a dual capacitor with...
Replacing the broken pickup mount on the Beogram 4000
Unfortunately, the plastic tab in the pickup mount on the Beogram 4000 series can break due to wear, stress and age as seen below. To address this problem I’ve developed a replacement with flexible PCB and plastic mount. To ensure that the parts are as...
Updates to BeoTac
One of the important matters when 3D printing is to minimize the print time, so I've optimized the layout of the BeoTac which reduces the print time by ~45 minutes. The result is a good looking BeoTac with softer edges.You can see the previous design...
Servo motor replacement for the Beogram 4000 series
The servo motor in the Beogram 4000 series isn't as prone to wear as the DC platter motor but occasionally I come across some noisy and unstable ones. They are hard to restore since it's impossible to take the Oilite bearings out. They are fused...
BeoTac, a tachometer for the Beogram 4000 series
This article aims at describing the process of developing and implementing an Arduino-based tachometer. This should make it possible to measure the performance and stability of the motor in a Beogram 4000 series turntable.
Restoring the keypad and chassis on a Beogram 4002
After replacing the light bulbs on the Beogram 4002 I wrote about in my previous post it was time to restore the keypad and chassis. As almost always, the varnish and black paint are worn by decades of use since the acids in the skin dissolve it. As...
Replacing the incandescent light bulbs
This article shows the results of experimenting with a plug-and-play replacement for the old incandescent light bulbs originally placed in the RPM adjustment part of the keypad on the Beogram 4000 series.
Replacing the light bulb tracking sensor on the BG4002
As usual, when repairing the Beogram 4002, I replace the light bulb associated with the tracking sensor. The old light bulb is old and prone to failure. Furthermore, it's glued to the housing and, therefore, hard to replace. To make sure that...
Beogram 400X Relay Replacements
After I changed all the capacitors on the main board of the Beogram 4002 (5521), I am restoring it right now, the 45 RPM circuit stopped working while listening to a record with The Boss. I sought help with the schematics and replaced the two main ones.