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Part 2 in the dumpster Tektronix 4CH 500MHz TDS540S oscilloscope.
Replacing the CRT with an LCD had a few issues...
Ebay listing here: https://www.ebay.com.au/itm/225251897379
Part 1 dumpster find: https://www.youtube.com/watch?v=-Z5GsZ9wLiU&t=963s
Part 1 Repair: https://www.youtube.com/watch?v=WHwf26JCUec
Forum: https://www.eevblog.com/forum/blog/eevblog-1515-dumpster-tektronix-tds540d-500mhz-oscilloscope-lcd-replacement/
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#ElectronicsCreators #dumpsterdiving #tektronix

By YTB

19 thoughts on “Eevblog 1515 – dumpster tektronix tds540d 500mhz oscilloscope lcd upgrade”
  1. Avataaar/Circle Created with python_avatars nophead says:

    Perhaps, rather than actively detecting the fans presence, it just needed the current it takes to keep the PSU from hiccuping.

  2. Avataaar/Circle Created with python_avatars Ahmed ahmed says:

    great work

  3. Avataaar/Circle Created with python_avatars Jakob says:

    If there is fx 15v then use 15v, often quite a margin to work with even though it claim fx 12v nominel for the display board..aint there often some wiggle room on these modern products, and you can easily check how it being bucked on the display board and chedk the values vs the 12v scenario ..use your adjustable PSU and check it, while slowly dialing from 12v to 15v.

  4. Avataaar/Circle Created with python_avatars Joseph Chamness says:

    Looks like if you wanted to buy one you would have to pay from 700 to 2000 AUD ?

  5. Avataaar/Circle Created with python_avatars Joshua Hutton says:

    Why don't you 3d print some knobs

  6. Avataaar/Circle Created with python_avatars kittyhawk says:

    Don’t know where these elusive dumpsters are. Every one I looked in had trash and smelt bad!

  7. Avataaar/Circle Created with python_avatars Stanley Zaske says:

    Are you sure you know what you're doing? 🙂

  8. Avataaar/Circle Created with python_avatars Alex Wang says:

    SAFE OPERATING AREA VID PLEASEEEEEEEEE 🙂

  9. Avataaar/Circle Created with python_avatars reasonablebeing says:

    design and 3D print a frame or gasket for the LCD display in black filament?

  10. Avataaar/Circle Created with python_avatars jlucasound says:

    I never thought you could replace a CRT with an LCD. So cool!
    What a "Brick", though. 🤣🏋🏋‍♂🏋‍♀ No wonder you won't ship it!
    Not worth it.

  11. Avataaar/Circle Created with python_avatars Grey Hodge says:

    There are a lot of creators that I watch at 1.5x and I love how Dave speaks fast enough that I don’t have to. He values our time and doesn’t fuck around!

  12. Avataaar/Circle Created with python_avatars Private says:

    Next trip to Sydney every dumpster needs raiding?

  13. Avataaar/Circle Created with python_avatars imark7777777 says:

    I bet they're using the incoming video signal as a clock source, and that clock source is also used to drive the menu… and that clock source is a little out of spec for what it's expecting.

  14. Avataaar/Circle Created with python_avatars John Williamson says:

    PWM current sensing to determine running .

  15. Avataaar/Circle Created with python_avatars Bearded engineer’s show says:

    Hey! What about CRT magic? Everybody like CRTs!

  16. Avataaar/Circle Created with python_avatars EZ HACK says:

    nice dumpster find…. im making a cable that u can use a cordless drill Battery as a backup batt for a laptop. my i have been testing a few batteries and the results are amazing basic clip/probes to laptop power port 18volts D/C EZhack Batt Cord HACK lol now what cheap scope can tell me the noise coming out a 18-volt D/C lithium im not marketing it just making a video for Utube

  17. Avataaar/Circle Created with python_avatars Paul Stubbs says:

    Wow, wouldn't mind that one in my kit, Oh Sydney, darn.

  18. Avataaar/Circle Created with python_avatars Francis Poirier says:

    WHERE ARE THESE DUMPSTERS

  19. Avataaar/Circle Created with python_avatars EEVblog says:

    The results of a poll on Twitter said to move this video from the 2nd channel to the main channel here, so here it is.

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