| Electronics > Repair |
| Hameg HM8118 repair |
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| TRN:
--- Quote from: coromonadalix on November 27, 2023, 01:16:58 am ---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 --- End quote --- 22pins means a serial interface Unfortunately this LCD has parallel interface |
| coromonadalix:
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 ? |
| TRN:
--- Quote from: coromonadalix on November 27, 2023, 11:13:40 am ---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 ? --- End quote --- Hello coromonadalix, All your comments are well received and appreciated, so keep them coming :-+, and I don't think I am stubborn ;D I might be mistaken but the reason I mentioned that the protocol is parallel, because tracing the PCB, all 8 data lines are connected to the MCU via 51ohm resistors, and I figured that if SPI was used they would not have connected D0-D5, but only D6 & D7 |
| coromonadalix:
ok i admit i'm in the wrong sorry check pin2 p/s the answer is there maybe find some projects with similar displays .... and you have other 240x64 dual drivers like yours but in the standard physical metal frame some specs found today https://www.crystalfontz.com/controllers/Epson/S1D10605/80/ attached here from https://www.crystalfontz.com/controllers/Epson possible substitutions ?? but 8088 mode and not the same controller .... would be nice to have help from the designer https://www.winstar.com.tw/products/graphic-lcd-display-module/240x64-lcd-display.html https://www.raystar-optronics.com/graphic-lcd-display-module/240x64-lcd-display.html https://www.raystar-optronics.com/upload_files/monochrome-lcd-module/240x64-graphic-lcd-dispaly/RG24064A2-datasheet.pdf https://www.orientdisplay.com/products/amg24064p-g-w6wfdw-4-3-240x64-cog-lcd-module/ now i understand when you have 22 pins you loose the parallel mode .... so many driver ic's and possibilities .... but no access to the cpu code |O |
| TRN:
No problem, everybody makes mistakes once and a while :) Yep, pin 2 is connected to +3.3V, so the bus is parallel |
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