cant believe that it is a failure of the display themselfes, more of the flexboard/connector or driver unit
Good luck, sourcing this kind of display is a nightmare.
Of course you could kindly ask Rhode & Schwartz for some information or spares.
If you're on your own in the end, it can help searching to know the display resolution, number of pins on FPC and bus data format.
they are glued on the glass with conductive glue .... and sometimes having some hardware who push / press on theses could help
its a gamble
have a look into the comments of
Maybe Michel.Waleczek (at) gmail.com can help you out with a manual...
cant believe that it is a failure of the display themselfes, more of the flexboard/connector or driver unitExactly.
The flex bonding looks very suspicious:
(Attachment Link)
Does it normally fold the flex cable back behind the display? I would try pressing the bond with pencil eraser and see whether it helps.
My personal experience with trying to heat up and re-bond the flex cables under stress has been negative so far. It works until you fold the cable in place and then detaches again.
You may be able to fold a piece of sheet metal to make a clip and attach it to the top to hold the flex cable. It worked for me once...
the last resort would be to snif out the communication protocols with an logic analyser and figure out wich controller by chance they are using and finally finding the right lcd ??
look like a 40x8 characters lcd for sure .... if i count them in their user manual images .... i dont think its a graphical one ??
look like a 40x8 characters lcd for sure .... if i count them in their user manual images .... i dont think its a graphical one ??
I'm pretty convinced it's a graphical LCD, the third picture has an uninterrupted line of pixels down the display, character LCDs generally have 'gaps' between rows of characters.
Looking at the includes and source files in the video linked give the impression it's a graphic one too, LCDDRAW.C and LCDTEXT.C, plus the Epson.c might indicate it could an Epson (compatible?) controller?
The pictures are nearly good enough to count the pixels, I think it's almost definitely 64V just by counting but obvs counting pixels that aren't visible on the RH side makes it tricky, maybe 128H making it a 128x64 (maybe 138 which would mean custom?).
There's 2 chips mounted on the glass and the flat flex looks as though there's a bunch of vias so they're 'in parallel' for the data and probably most control lines so there'll be a 'chip select' line somewhere.
It might be useful to know the physical dimensions of the display.
****Also might be interesting to see a little more of the CPU and memory, if it's got external program memory or there have been firmware updates it might give some clues to examine the contents?****
Interesting, uses a PSD chip so it's 8052 based, firmware update is likely encrypted though
just send them an email if they have a substitution ?? at least a 30 pins flex with all the signals ...and the controllers
yep thats what i tought 2x chipselect,1x Enable pin ...
dual S1D10605 lcd's ?
http://www.3t-lcd.com/MechanicalSpec/Graphical/TMGG24064-XX.pdf 22 pins lcd ?
COG-BT240064-05
https://www.farnell.com/datasheets/31889.pdf 22 pins lcd ?
TMGG24064-XX
http://www.3t-lcd.com/MechanicalSpec/Graphical/TMGG24064-XX.pdf 22 pins lcd ?
the TMGG24064 is the one we get the most while searching ?, it would need some pcb adapters to reduce the pin count ??
https://i-lcd.com/LCD/Graphic/240x64.php
I think you should check you received pdf from the designer before answering ....
Check the pinouts and you'll learn that your has SPI lines, see SCL SI etc .... unless specifically written parallel operation and or 8088 interfacing etc .... witch the pdf doesn't tell
Well thats all for me, it seem you have some stubbornness, i'll keep my comments for now and read only
Now that you seem to have some connection from the designer, if he still wants to answer, ask him for substitutes, and do some search now that you got some answers on the 2x controller blob
I think you may, in the end do some magic in the hardware and maybe firmware too R&S should be made aware of this problem, unless they already know it, and not selling parts is not good even if you end up with a non calibrated unit, this is abusive behaviour.
Theses lcd's are old or unobtanium and the other suggested are more recent, but still old in some models ...
So sad to have an expensive lcr pludered by a now cheap lcd problem, take some courage and made it repaired ?