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DIY: GW Instek GDS-1000B 7-inch to 8-inch Display Upgrade (with pics)
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Triode71:

--- Quote from: kcbrown on February 05, 2021, 07:14:21 pm ---
--- Quote from: Triode71 on January 30, 2021, 05:43:34 am ---The black surround is apparently printed on the rear surface. I'd say it wouldn't be *impossible*, just a gigantic pain […]

--- End quote ---

My plan actually is to take a razor blade to the black surround, and attempt to remove it by scraping it off, on the theory that the glass underneath is very smooth (optically smooth, presumably) and would thus make scraping it off relatively straightforward.  Since the glass is glued to the front bezel, I'll probably just attempt the surround removal with the glass in place, and not bother to attempt to remove the glass from the bezel unless I somehow can't remove the surround.

I'll post pics of the attempt once the display arrives and I can begin to work on this.

--- End quote ---

Cool, and an interesting approach. I wish I'd saved the broken glass so I could sorta scrape away at it as a test. Let us know!
nctnico:

--- Quote from: kcbrown on February 05, 2021, 07:14:21 pm ---
--- Quote from: Triode71 on January 30, 2021, 05:43:34 am ---The black surround is apparently printed on the rear surface. I'd say it wouldn't be *impossible*, just a gigantic pain— unless one had a media-blasting apparatus. I hadn't even thought of keeping the glass, actually, though I probably should've at least considered it.

The glass did seem to have an anti-reflective surface. It was also slightly tinted/ smoked, as I think the pictures kinda show. The 8-inch replacement screen is anti-reflective, however.

--- End quote ---

My plan actually is to take a razor blade to the black surround, and attempt to remove it by scraping it off, on the theory that the glass underneath is very smooth (optically smooth, presumably) and would thus make scraping it off relatively straightforward.  Since the glass is glued to the front bezel, I'll probably just attempt the surround removal with the glass in place, and not bother to attempt to remove the glass from the bezel unless I somehow can't remove the surround.

--- End quote ---
Maybe a strong solvent also works.
kcbrown:

--- Quote from: nctnico on February 05, 2021, 09:58:35 pm ---Maybe a strong solvent also works.

--- End quote ---

Yeah, I'll end up trying that if the razor blade approach doesn't work.  The problem with a solvent is that it could damage the bezel, which is obviously something I'd like to avoid if possible.

Much to my surprise, the display arrived today!   That was fast.  I did pay for tracked shipping (FedEx), and that probably played a role, but even so, I'm impressed.
kcbrown:
I got the display installed.

Here's the back end of the scope after opening it up:



I used a razor blade scraper to remove the surround on the glass.  This worked a treat.  Here you can see that I've scraped off a small portion of it, and you can see the razor scraper I'm using to do this.  I used a brand new blade for this, and that almost certainly made a significant difference:



Here's the finished result of the surround removal process:





I thought I'd show what the original display looks like when viewed through the glass without the surround:



Here's the new display mounted on the backing plate.  @Triode71 was right: the ribbon connector isn't quite long enough to make it possible to sit the display as high off of the backing plate as the original display was.



Here's the stuff I used to mount the display onto the backing plate:



I did a lot of positioning in order to determine the exact right location for the display, because once you attach it using the double sided adhesive gel, it is not coming off.  So it's important to be very precise here.  I ended up marking the backing plate at the top edge and left edge of the display once I had it positioned correctly.  Part of the positioning process involved looking behind the plate at the ribbon as it enters the connector to ensure that no horizontal strain was being placed on it.

Because the edge of the display would be visible through the glass, I ended up using some black "Duck Tape".  Electrical tape is a little too glossy.  The ideal stuff to use would be some black cloth tape or, if they even make such a thing, black felt tape.  But I didn't have anything like that, so this had to do.  The nice thing about tape, though, is that you can always remove it and use something else.  Here's how I applied it:



And here's what the display looks like through the glass with the tape applied (this is before I removed the protective film from the display, as that's the last thing you want to do immediately prior to reassembly):



Here's what it looks like powered up after reassembly:



One interesting thing about the display is that there is a slight amount of bloom in it:



It's not terribly noticeable from working distance, really, unless you're looking at it carefully, or already know it's there.  It's difficult to miss it if you know it's there.   :)

All in all, this looks pretty good.  It would have been nice to be able to mount the display further forward in the case, to match the positioning of the original display, but either way, it is certainly an improvement over the original.

Triode71:

--- Quote from: kcbrown on February 06, 2021, 02:57:39 am ---I got the display installed.

I used a razor blade scraper to remove the surround on the glass.  This worked a treat. 
All in all, this looks pretty good.  It would have been nice to be able to mount the display further forward in the case, to match the positioning of the original display, but either way, it is certainly an improvement over the original.

--- End quote ---

Nice! And just a wee bit more profesh than my kinda kludgey approach. Really glad it worked out for ya.  :-+

Thanks for the pics; it's interesting to see the mod done "through the looking glass", if you will.
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