Marconi TF2210 Oscilloscope 2ch 100MHz 1969 teardown

huge oscilloscope from 1969-70 deepth 56cm, 23cm wide, 33cm heigh, weight 21kg,
Super fast 100MHz for that time must have been something special,
I had the idea it was all transistors, but I found: 6 nuvistors, M8082 power pentode, DY51 diode,
so that will be 8 tubes + the CRT, and a ton of transistors and a few IC's,
The CRT vertical deflection is made in 4 sections and feed with 4 different impadance matched and timed circuits, very nice designed tube.
Phosfor apear to be yellow but it shine green, it is a filter added to the front glass to the crt, that is glued to the crt. and then a removeable green filter, why all those filters ? will make the screen very dimm. Error in powersupply, on indicator blinks to warn something is alarming wrong and it shuts down the unit to protect it from futher damage. Sadly No schematics exist online for this model.
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#oscilloscope
#teardown
#repair
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I use auto generated subs, i am sorry there are a few spelling errors,
maybe one day they can do it better..
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[@Indiskret1]

What a fantastically intricate and complex construction. Must've been very expensive back then. That's why I love watching channels like yours. Looking forward to more videos about it, if possible! Thanks any which way!

[@crr8297]

Thank you for the video.
The turret switch of the input attenuator is very reminiscent of the turret tuners that were used on early 1950s televisions, each strip could be removed and replaced by one that tuned the television channels in your area.

[@video99couk]

Good luck with it. A lot of work required but it's a fantastic bit of kit for the time. My first 'scope of just a few years earlier was a 5Mhz single channel Heathkit, but this is on another level completely.

[@zebo-the-fat]

Nice piece of kit, may be worth replacing the caps and the cracked diode, not sure how you can fix the trimmer on the front panel without the fancy nut, maybe someone with a small lathe and a lot of skill could make one?

[@gregebert5544]

The tapped vertical deflection plates are required because the finite time it takes electrons to travel across the plates; very ingenious.
BTW, a 100Mhz scope back in 1969 was quite advanced. The Tektronix 465, also 100Mhz, wasn't introduced until 1972.
It's going to take a lot of work to get this scope running again; not just the dried-up electrolytics. The switches will likely have corrosion, which causes intermittent behavior, and many of the trimmer pots looked cheap and probably have corrosion issues as well. Best of luck if you decide to fix it.

[@TeardownOZ2CPU]

if only i have a schematic it would have been working allready, all and nothing seems to be going on all over the powersupply, and it is a little bit confusing designed..

[@LutzSchafer]

Nice scope! Did you get any high voltage on the flyback?

[@franciscoferreira-eh1yu]

Who owned this in 1969 ? NASA ?

[@franciscoferreira-eh1yu]

Who owned this in 1969 ? NASA ?