Depends if it is passive or active matrix. Active should be more or less as you say. Passive matrix screens are stranger as they require some odd drive signals to make work.
-
Hello MLAers! We've re-enabled auto-approval for accounts. If you are still waiting on account approval, please check this thread for more information.
Modern display into Powerbook 190
- Thread starter indibil
- Start date
As someone already mentioned, I think it might be worth trying this method first. In this video it's very difficult to remove the old film, in other videos it's easier to remove.
I found a 30x20cm film for less than 5€. I'll probably get bubbles when I stick it on, who knows.
Vynegar Syndrome
I want to ask you another questions. I have obtained a PB 3400 RAM module, which I read works at 3.3V, and I assume that the PB190 RAM works at 5V. The main physical difference is that the connector has been soldered turned 180º, preventing it from being plugged in. I have looked for the reference for the memory chips, and I only found this document where it says that they work at 5V.
UPD4218160G5-60
Could it be that these chips can work interchangeably at 3.3V and 5V? That they have a wide range?
If so, I would try to rotate the connector 180º, and use this 32MB of RAM, because I am not able to find RAM suitable for PB190 at an affordable price. My PB190 has 8MB onboard.
Some PB5300s have 1MB of VRAM onboard, do you think it is possible to replace the VRAM keys on the PB190 with larger ones and get more colors on the PB190?
I found a 30x20cm film for less than 5€. I'll probably get bubbles when I stick it on, who knows.
Vynegar Syndrome
I want to ask you another questions. I have obtained a PB 3400 RAM module, which I read works at 3.3V, and I assume that the PB190 RAM works at 5V. The main physical difference is that the connector has been soldered turned 180º, preventing it from being plugged in. I have looked for the reference for the memory chips, and I only found this document where it says that they work at 5V.
UPD4218160G5-60
Could it be that these chips can work interchangeably at 3.3V and 5V? That they have a wide range?
If so, I would try to rotate the connector 180º, and use this 32MB of RAM, because I am not able to find RAM suitable for PB190 at an affordable price. My PB190 has 8MB onboard.
Some PB5300s have 1MB of VRAM onboard, do you think it is possible to replace the VRAM keys on the PB190 with larger ones and get more colors on the PB190?
passive matrix panels require a specific type of film, TN film.
these polarizer films have a special filtering layer. this is also why it's often harder to remove TN films.
why not just post a wanted thread in the trading post?
edit: yeah absolutely do not do that.
compare the memory expansion pinouts. you would be putting 5v into 3.3v parts.
these polarizer films have a special filtering layer. this is also why it's often harder to remove TN films.
this is a very bad idea and highly unlikely to work. there's a reason apple rotated the connector...
why not just post a wanted thread in the trading post?
edit: yeah absolutely do not do that.
compare the memory expansion pinouts. you would be putting 5v into 3.3v parts.
So I need TN film? I had found polarized.
Thanks for the RAM suggestion, apart from the voltage, the pinout is completely different. I'm not going to try it.
I haven't looked in the buy-sell section because I'm in Spain, just the shipping and taxes would make it too expensive.
Ok, thanks, then I'm going to buy polarized, and I've seen that it costs less to remove. I found this one, what do you think?
Polarized film
Polarized film
That’s regular film so it won’t work. You need FSTN film which includes an extra retarder layer required for passive matrix displays to display a proper image. That’s unfortunately harder to find.
try fstn film from here https://es.aliexpress.com/item/1005008087000712.html
should be second option
should be second option
Yes, you must match the right film to the right display. Get one and go from there, with experimenting most likely required. The existing film can be slowly peeled away do from a warm room, and the old glue wipe away with IPA. Needless to say avoid any bending of the LCD and extreme heat/pressure on the display during this work!
Good luck!
Regarding bubbles, there is always the option of removing the adhesive and just mounting the polariser using thin double sided tape on the edges; I had to do same in a STN LCD display (uses two polarisers front and back, get out!) it was simply too difficult to sandwich everything together.
Regarding bubbles, there is always the option of removing the adhesive and just mounting the polariser using thin double sided tape on the edges; I had to do same in a STN LCD display (uses two polarisers front and back, get out!) it was simply too difficult to sandwich everything together.
The 1400 issue is very simple: there are literally tons of scrap 1400cs models out there with decent screens for cheap.
