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Replacing readout lamps in Tek 576 curve tracer

 

My 576 works well except that a few of the #683 bulbs that illuminate the fiber optic scale factor readouts are burned out. The service manual is quite terse on the procedure to replace them, and completely ignores the situation where the burned out bulb is on the front readout circuit board.?


Does anyone have any practical experience and/or tips on how to replace the bulbs, on both the front and rear boards, with a minimum of risk to the fiber optic bundles?

Thanks,
Stan
 

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The read out lamps are fairly easy to replace however it is a bit fiddly. There are 2 U shaped boards per gray can front and back. These need to be pulled out to get to the bulbs. You do not need to disturb the fiber bundles for this process at all however the wires are on the short side of things.

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Zen

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From: [email protected] <[email protected]> On Behalf Of Stan
Sent: Saturday, July 30, 2022 10:52 PM
To: [email protected]
Subject: [TekScopes2] Replacing readout lamps in Tek 576 curve tracer

?

My 576 works well except that a few of the #683 bulbs that illuminate the fiber optic scale factor readouts are burned out. The service manual is quite terse on the procedure to replace them, and completely ignores the situation where the burned out bulb is on the front readout circuit board.?


Does anyone have any practical experience and/or tips on how to replace the bulbs, on both the front and rear boards, with a minimum of risk to the fiber optic bundles?

Thanks,
Stan

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