CTX CVP-5468NI picture increased width then shrank

[luRaichu]

Originally Posted by Username1

The other thing I would do is step through all the items in the menu,
be sure every item works as it should, geometry, pincushion, etc.

Hi, this monitor does not have an OSD. Those adjustments are controlled by pots on the mainboard/neckboard.

Originally Posted by Oldperson1

C322 as a suspect makes a lot of sense, especially if it's tied to horizontal linearity at higher scan frequencies. XGA would push the deflection system harder than VGA or SVGA, so a cap on the edge of spec might not show issues until then. ESR rising past 10 ohms could absolutely distort the waveform under load. Without schematics, starting with parts known to fail under similar symptoms is solid strategy.

My gut says you're right, given the failure mode I watched unfold.

I searched Jason Scott's Discmaster for "5468NI" and found old shareware versions of Anatek's "Resolve Monitor Repair Database" on some commercial CD-ROMs. They're DOS programs which list many monitors and repairs. Unfortunately these versions only have information on the CTX CVP-5468 which is very similar to mine except it doesn't support Non-Interlaced (NI) modes that the 5468NI can show.
I was able to run Resolve in DOSBOX and took some screenshots of listed repairs for the 5468.

List of repairs
List of repairs (continued)
SCREEN TO BRIGHT, RASTER BRIGHT, NO CONTRAST/BRIGHTNESS
NO COLORS
DEAD, NO RASTER, NO VIDEO, SMOKED, BLANK SCREEN, SHUTS DOWN #1
DEAD, NO RASTER, NO VIDEO, SMOKED, BLANK SCREEN, SHUTS DOWN #2
DEAD, NO RASTER, NO VIDEO, SMOKED, BLANK SCREEN, SHUTS DOWN #3
DEAD, NO RASTER, NO VIDEO, SMOKED, BLANK SCREEN, SHUTS DOWN #4
DEAD, NO RASTER, NO VIDEO, SMOKED, BLANK SCREEN, SHUTS DOWN #5
DEAD, NO RASTER, NO VIDEO, SMOKED, BLANK SCREEN, SHUTS DOWN #6
DIES, TRYS TO COME UP AND DIES, USUALLY JUST AFTER STARTUP
HORIZONTAL LINE, NO VERTICAL, VERTICAL COLLAPSE
NO HORIZONTAL SYNC, JITTERS, ROLLS
NO VIDEO, BLANK SCREEN, NO CHARACTERS, RASTER BUT NO VIDEO #1
NO VIDEO, BLANK SCREEN, NO CHARACTERS, RASTER BUT NO VIDEO #2
NO VIDEO, BLANK SCREEN, NO CHARACTERS, RASTER BUT NO VIDEO #3
VERTICAL LINE, NO HORIZONTAL, NO SCAN
VERTICAL SIZE IS WRONG, SCRUNCHED, VERTICAL COLLAPSE

However, it looks like Resolve 3.17 and above document the 5468NI.
http://web.archive.org/web/199610280...om/reslist.htm
It cost $249 back in the day..! The Internet Archive doesn't have anything newer than the freeware releases of Resolve 2. If anyone has Resolve 3.17 or greater, please let me know.

As for CTX, their service manuals were only $15 direct from them.
http://www.repairfaq.org/REPAIR/F_mo...ml#MONFAQI_003
So I'm sure some old repair shops or people still have the schematics for this monitor. They just haven't been archived yet.