Re: 475A horizontal amplifier problem


In that case, it might be well worth pulling the tube and inspecting for broken bits of glass in the neck. The 475A is well worth saving.


On 10/5/2020 4:36 PM, Jim Hall wrote:
Since this was one of the scopes that I have purchased on eBay, I don't know its history. The waveforms look correct on the deflection plates. However, compared to those on the plates of my good 475A, they are compressed horizontally.

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