![]() The Manufacturer's Service Manual, available from BeoWorld, is an integral component of the proper restoration process. This article describes how to perform a complete restoration of this model, including taking care of all known failures and defects. They have proven very reliable over the subsequent 20 or so years, with only a small number of consistent defects, beyond regular wear and tear. They all looked very similar from the outside, and inside had identical circuit boards, and operating mechanisms. They were superseded by a cheaper and much lighter range of models (Type 59xx) produced from 1985 to 1994. The updated models (produced from 1974 to 1980) were available as the BG4002 - a stereo version (without a built- in RIAA amplifier), and as the BG6000 quadraphonic version with a built in CD4 demodulator / RIAA amplifier. It has a permanent place in the NY Museum of Modern Art. Bang and Olufsen introduced the world's first tangential-tracking turntable (Zero tracking error) - the BeoGram 4000, in 1972. ![]() Audio Restoration Project: Repair B&O Bang and Olufsen BeoGram 4500 Type 59xx Tangential Turntable Parts of this article appear with my permission on the B&O BeoWorld website. No part of this document may be reproduced or distributed without express written permission.
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