Bush DAC90A

Bush DAC90A radio. Square-shouldered brown Bakelite radio with a black and gold tuning scale at the top and a large round gold speaker grille

With over fifty years experience in vintage radio repair and restoration, I know the Bush DAC90A inside out. I’ve repaired and restored hundreds of different makes and models of valve radios, but I’ve dealt with more DAC90A radios in their brown or ivory Bakelite cabinets than any other radio. These radios are popular among collectors because they are a small table-top model which look good in any room, they sound great, they are relatively inexpensive, they are reliable... It’s no wonder that the Bush DAC90A is sought after by collectors the world over.

RADIO SPECIFICATIONS

Manufactured from 1950
Long and Medium Wave
Valves – UCH42 UF41 UBC41 UL41 UY41
AC/DC Supply

SERVICE MANUAL PREVIEW

The original Bush service manual for the DAC90A, issued by Bush Radio in April 1950, is available to members. Here's a taste of what's inside.

Front cover of the Bush DAC90A service instructions, with the Bush Radio logo and a photo of the receiver
Front cover
Circuit diagram of the Bush DAC90A with valve base connections
Circuit diagram
Top view of the DAC90A chassis with the valves, IF transformers, trimmers and mains voltage panel labelled
Top chassis view
Underneath view of the DAC90A chassis with every resistor and capacitor labelled
Underneath chassis view

These pictures are faded on purpose, just for this preview. Members get the complete manual, unfaded, to view and download.

The manual includes:

  • The full circuit diagram and valve base connections
  • Capacitor, resistor and coil values with Bush part numbers
  • Step by step IF and RF alignment
  • Valve voltages and currents
  • Fault finding notes for the AF, IF and RF sections
  • How to dismantle the set and fit a new cord drive
  • Labelled photos of the top and underneath of the chassis

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