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Can this drive Philips A59EAK552X21 ? #7

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oomek opened this issue Dec 21, 2021 · 4 comments
Open

Can this drive Philips A59EAK552X21 ? #7

oomek opened this issue Dec 21, 2021 · 4 comments

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@oomek
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oomek commented Dec 21, 2021 •
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It's a tube used in Bang & Olufsen Beovision 1 consumer TV. It has no convergence rings and 6 pin yoke.

20211221_134611218_iOS

20211221_134701671_iOS
@oomek oomek changed the title Can this drive Phillips A59EAK552X21 ? Can this drive Philips A59EAK552X21 ? Dec 21, 2021
@oomek
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oomek commented Dec 21, 2021

20211221_140121436_iOS
20211221_140150855_iOS

@tdaede
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tdaede commented Dec 21, 2021

That looks pretty typical. It can't currently drive the rotation coil so you won't have rotation adjustment.

The neck board transistors look surprisingly small. Is a service manual available?

@oomek
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oomek commented Dec 22, 2021

Oh, so this 2 wires aren't required to drive the yoke, just are responsible for rotation? I don't have any schematic, just manual which is'n very helpful. I could make some more photos of the transistors.

@oomek
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oomek commented Jul 14, 2022

Update: I've opened today another Beovision1, an older SW 1.2 version and it has only 4 wires connected to the deflection coils. Red and Brown are NC.

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@tdaede @oomek