The Redmere Soloist
Powe Supply
IMPORTANT: These drawing and notes are provided for interest only and are not guaranteed to be accurate. Use at your own risk and discretion. The equipment shown contains lethal mains voltages and should only be worked on by people with suitable training and experience. Schematics and layouts are typical but will vary.
PRINTING
Wix (bless 'em 😖) have changed their image format - again - to avif just to make them awkward to print. Unless you want to buy a converter, the easiest way to make a hard copy is:
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Left click when the magnifying glass icon appears and wait for the picture to clear.
(On a touch screen, tap on the image). This will display a higher res file. -
Right click and 'save image as' to somewhere as an avif file.
(On a touch screen, touch and hold down to view the menu) -
Upload the saved file to your Google Drive.
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Open the file and use the print menu to make a hard copy or save as a pdf.
Power Supply
Nothing unusual here. The +/-12v supplies feed the preamp using 78/79 series regulators. One chassis found had a 79M12 (500mA) fitted and another had a 7912 (1A). Prototypes or Trade Fair samples may be different.
A minor complaint is that the mains earth is connected to the chassis using one of the IEC mains connector screws. That's not a good idea. 1 - it's plastic and can crack or come loose and 2- the safety earth should have it's own dedicated fixing. Easy enough to drill the back panel and make a proper connection.
Thanks to Billy Stephens for the details of an early chassis he's working on. This was before the factory went over to integrated regulators.
