Re: Another HannsG HG281D
Regarding this ribbon cable on CN501, it is very finnicky - if I don't leave it with a little pressure holding it just right, the right side of the display goes from normal to faded and discolored.
What is weird is that this ribbon cable should be effecting the left side of the image displayed, since the cable is the one on the right side of the TCON when viewed from the back. Or am I completely off here?
I sometimes got lighter grey horizontal rectangles, about a half inch high and spanning the entire left side of the monitor when messing around with this cable (the right side image was ugly while doing this), but never anything else on the left side.
This particular ribbon cable was creased at a 90° angle coming out of the display's connector on its left side, and then creased further down on the right side. Also, the tape covering it was pressing it against the metal display backing, which seems to have heated it to the point where it made some discolored bubble patterns on the plastic. I've tried reseating the cable a few times and cleaning it with rubbing alcohol, but still no improvement on the left side of the display.
Also worth mentioning, I couldn't figure out how to get the ribbon cable released from the connector - a YouTube video I watched had the release bar flip up in the opposite direction from these ones, and I wrenched pretty hard on them before I figured out which way they flipped up. So I could have damaged the connectors, but I've looked pretty closely, and I don't see any broken connections with the TCON board.
I'm thinking (or hoping) that this ribbon cable was just barely hanging in there, and then jostling it around when removing the TCON finally did it in?
I'm looking at replacing it, seems to be a 0.5mm pitch 80 pin FFP cable, but it has some lines missing from it.
I could sever the same wires with a razor blade, but would rather not risk screwing up the other lines on a new cable.
Do you guys think it would be fine to have continuity on the pins that have missing wires in this ribbon cable?
Is there a better way to test out a ribbon cable than checking the individual pin resistance across the cable and flexing it around? Sounds pretty tedious for 80 pins.
A pic of the current cable is attached
Regarding this ribbon cable on CN501, it is very finnicky - if I don't leave it with a little pressure holding it just right, the right side of the display goes from normal to faded and discolored.
What is weird is that this ribbon cable should be effecting the left side of the image displayed, since the cable is the one on the right side of the TCON when viewed from the back. Or am I completely off here?
I sometimes got lighter grey horizontal rectangles, about a half inch high and spanning the entire left side of the monitor when messing around with this cable (the right side image was ugly while doing this), but never anything else on the left side.
This particular ribbon cable was creased at a 90° angle coming out of the display's connector on its left side, and then creased further down on the right side. Also, the tape covering it was pressing it against the metal display backing, which seems to have heated it to the point where it made some discolored bubble patterns on the plastic. I've tried reseating the cable a few times and cleaning it with rubbing alcohol, but still no improvement on the left side of the display.
Also worth mentioning, I couldn't figure out how to get the ribbon cable released from the connector - a YouTube video I watched had the release bar flip up in the opposite direction from these ones, and I wrenched pretty hard on them before I figured out which way they flipped up. So I could have damaged the connectors, but I've looked pretty closely, and I don't see any broken connections with the TCON board.
I'm thinking (or hoping) that this ribbon cable was just barely hanging in there, and then jostling it around when removing the TCON finally did it in?
I'm looking at replacing it, seems to be a 0.5mm pitch 80 pin FFP cable, but it has some lines missing from it.
I could sever the same wires with a razor blade, but would rather not risk screwing up the other lines on a new cable.
Do you guys think it would be fine to have continuity on the pins that have missing wires in this ribbon cable?
Is there a better way to test out a ribbon cable than checking the individual pin resistance across the cable and flexing it around? Sounds pretty tedious for 80 pins.
A pic of the current cable is attached
Comment