#6 Philips Scope PM3219 Repair - Part1(2)

[@helmuthrendl6560]

Danke für dieses Video. Sehr gut erklärt. Hoffe man sieht noch mehr.

[@dl7majstefan753]

Schaun´ mer mal....

[@dayleedwards3521]

I like your attention to detail, and the logical fault finding process. A standing joke when I was in the service industry many years ago, the electronic components are put there to protect the fuse. ... especially in the early days of colour TV power supplies.

[@dl7majstefan753]

Ha! Yes, nearly any fuse is always slower than a dying semiconductor. So the fuse doesn´t protect the semiconductor but the energy supplying component (transformer, rectifier, etc....) and therefore the whole unit.

[@NuGanjaTron]

Great documentation of this scope's innards -- yes, those damn RIFA X2's struck again! My heart skipped a few beats when you started poking around on that cascade while the scope was live -- glad you followed that up with a much needed safety warning! And then I lost it when you peered into the camera and signed off with "Heff a gut night!" :^)

[@dl7majstefan753]

Ha, Yes! No risk, no fun!

[@barteknowakowski1962]

you are an artist. Nice video, nice repair.

[@dl7majstefan753]

Many thanks for your comment

[@adrianclark9581]

Perfect explanations very helpful danke Stefan

[@yusdiy]

Great repair video. Very detailed explanation. Were you an engineer or teacher in the past?

[@dl7majstefan753]

I am a retired engineer.

[@yusdiy]

With plenty of advice and experience. Great to be you follower. Thank you for sharing your knowledge to the world. Keep up the great repair series especially old Germany or European brand test equipment. We must be inform about such good past instrument.

[@dl7majstefan753]

@@yusdiy many thanks for your comment

[@chuckvanderbildt]

Ah, the dreaded RIFA plague strikes again. These specific caps are notorious for failing, and they're responsible for a huge amount of unnecessary scrapping of otherwise perfectly functional gear. Good that you repaired it!

[@dl7majstefan753]

Yes, it´s a pity that many good gears are scrapped this way. But on the other hand, it´s a good opportunity to get good gears rather cheap.

[@kyoncoles872]

Hi! I have this same scope but ran into the issue that its always lighting up even when memory is off. The scope works normal otherwise except that the screen always is somewhat bright. Following the calibration steps got me nowhere, any clue on how to fix this?

[@dl7majstefan753]

Hello, i´m sorry, but a remote diagnosis is nearly impossible! Seems, that the CRT is permanently flooded ("flood guns") by the storage control. So look for faulty switches ("memory off") and components on this board.

[@kyoncoles872]

@@dl7majstefan753 I've found a document by philips describing this condition and how to fix it xdevs.com/doc/PHILIPS/pm3219%20.pdf seems like its a common issue caused by some design flaw

[@PeterWalkerHP16c]

The shock can last for the rest of your life ... Hahahaha!!!

[@thomaskallmyr]

PM3208 ?😮😮😮😮😮😮😮

[@dl7majstefan753]

??

[@jeldrikpetersen]

Duuude? ein gepolter Elko an Wechselstrom, was zeigst du den Leuten hier für sachen... Da hast du gleich die nächste Zeitbombe eingebaut! Hast du keine vernünftigen Folienkondensatoren?

[@dl7majstefan753]

Da verwechselst Du etwas: Der Kondensator ist natürlich ein Folienkondensator. Der Ring ist nicht die Polarität sondern die Markierung der äußeren Folienlage, wie bei guten Folien-Cs üblich.