Re: Oscilloscope
I have two oscilloscopes.
One 100 MHz digital storage scope used for most of my non repair work as it's only 250V maximum input rated and poor single shot capability. (HP 54501A, cost me £150.)
And one 20 MHz analog scope (cost £60), which I have used successfully to repair two plasma TVs; I chose it for 400V inputs and despite what people have said, with care a 20 MHz scope is sufficient for debugging a 720p plasma (and resolved an okay waveform on a 1080p Panasonic) although you are limited in the higher frequency ranges and you have to turn the intensity right up (and lose a bit of focus control). The most common adjustment is the Vsetup and Vsetdn (or Yfr/Yrr) which can be done if you can read 1/5th division.
I have two oscilloscopes.
One 100 MHz digital storage scope used for most of my non repair work as it's only 250V maximum input rated and poor single shot capability. (HP 54501A, cost me £150.)
And one 20 MHz analog scope (cost £60), which I have used successfully to repair two plasma TVs; I chose it for 400V inputs and despite what people have said, with care a 20 MHz scope is sufficient for debugging a 720p plasma (and resolved an okay waveform on a 1080p Panasonic) although you are limited in the higher frequency ranges and you have to turn the intensity right up (and lose a bit of focus control). The most common adjustment is the Vsetup and Vsetdn (or Yfr/Yrr) which can be done if you can read 1/5th division.
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