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Thank you everyone for trying to help! I really appreciate that.
But sadly SDumas was right.:cry:
I have probed around with meters inside the scope and every voltages seem spot on and all caps have low ESR etc. Then I decided to pull the CRT out and saw this:
Well I guess that's the end...
I have this Tek2205 scope, I was made in the 80's and I really love it's design inside - all off the shelf common components. It works perfectly fine when turned on. All knobs and controls are ok except the wave forms are distorted (see pics and video). It was suggested that's caused by...
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