Re: Tek 2247A won't boot up. Relays clicking, push-button LEDs flash, but no display
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Chris -
Sounds like power supply issues. Suggest checking capacitors on the power supply as well as looking for shorts to ground on the various voltage rails. Some scopes use the various front panel LEDs to provide an error code, but it sounds like you're not even getting that far as you don't have stable power.
Dave Casey
On Mon, Mar 6, 2023 at 3:28?PM Chris Kniker < chris@...> wrote:
My 2247A just failed on me and am looking for some initial thoughts on the likely culprit.
After pressing the on/off button, it immediately goes into a repetitive cycle of clicking (like relays turning on) and briefly flashing all the push-button LEDs.
The CRT never turns on and doesn't display any diagnostic information, obviously.
Before I open the unit up, I'm hoping there's a likely cause for such power-up problems.
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