Electronics > Repair
Replacing the LCD-Backlight(EL-Foil) on Neutrik A1, Edit: New Display wanted
Martin72:
Fu....
Opened it again and indeed, there was some dust/crumbles on the zebra strips.
Took them away with tape, cleaning the pcb contacts with isopropanol, reassembled it....Worser than before... :P
Now it´s open again and I have to think what´s the matter, my suspicion is the tape used for the lighting.
It is quite thick, thicker than what was stuck before.
Before the exchanging everything was fine, never touch a running...
Martin72:
In the end, I bought a used display that works better, but its backlight is also almost at the end.
A completely new display would be best, but that's where the problems begin.
5.3”, 256x128 dots and 4 bit parallel port....
Not to be found.
The stupid thing is, at the time the displays were ‘naked’ and only had columns and line controllers on board.
So it is here too.
On the A1 is a Z80 processor which in turn drives a SED1330F - and that controls the display via the 4 bits.
I would like to use a modern display, but I don't know how to connect it to the SED1330F.
I'm sure you would need some kind of converter in between, that's beyond my knowledge in the display area. ;) :P
coromonadalix:
datasheet attached, should be like this
you seems to have a controller less display, column and row drivers only
on ali i did saw you could replace your backlight with some "cuttable" ones ??
and for a subst display on Ebay they start at 100$ usd outch
theses : are supposed to be equivalent ??
PG256128C
PG256128ERS-CNN-H
EG4401S-FR-1
DMF6104N
https://www.ebay.com/itm/164903212712?
Martin72:
Hi,
--- Quote ---you seems to have a controller less display, column and row drivers only
--- End quote ---
Yep, see my post before.
I also know the datasheets and the prices for the so-called replacement types are steep.
Optrex Replacement
coromonadalix:
try the posted numbers, some are less expensives ...
alas prices have become crazy as .....
i paid 25$ usd for 256x128, and 37$ for 320x240 ones before covid :palm: good luck
unless finding ones with the SED controller on them and do some magic directly from the z80 mcu :palm:
this one on ALI ? a 5vdc backlight ??
https://www.aliexpress.us/item/3256805232721356.html?
a search on ebay.de ?
https://www.ebay.de/sch/i.html?_from=R40&_trksid=p4432023.m570.l1313&_nkw=RT256128A-1&_sacat=0
dmf682anf on ALI 97 euros ??
https://www.aliexpress.us/item/2255800807401192.html?
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