avadondragon
Well-known member
Are any of the passive matrix LCDs in these powerbooks interchangeable?
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PowerBook 140, 145, 145B, 160, 165 LCD Displays
- Thread starter avadondragon
- Start date
3lectr1cPPC
Well-known member
Some of these are monochome while others are grayscale. The 145 and 140 displays are the monochrome ones I believe, and the later ones are grayscale. They might still work but I’ll bet the cable is different across them.
beachycove
Well-known member
Weren’t the number of greys different on the greyscales? Could be video circuitry, I suppose.
desertrout
Well-known member
This is something I've been meaning to investigate, whether or not it was the on-board graphics or the displays themselves that limited greyscale depth.
There were three different displays used (with corresponding inverter boards) - Rev A (Sharp LM64P51), B (Hitachi LMG5200XTFC), and C (Sharp LM64P58 / Sharp LM64P582). It seems 140/145/145B can use any of the screens, according to various Apple docs - and certainly you see the Rev C screen used in many 140/145/145B's out there.
The Rev B display is different than the other two, with a different display cable and inverter board, and relatively rare; US Apple techs weren't even allowed to replace them with the same part but rather with the Rev C kit instead.
160/165 are *associated* in the repair / maintenance docs only with the Rev C screen. The Rev A and C screens have the same display cable (they have the same Apple PN), same capacitors, but have different inverter boards... however, you do see these displays and boards mixed in the wild.
I haven't been able to find spec sheets on any of these displays to confirm whether or not the Rev A or B screens are in fact strictly 1 bit. When I put a Rev C display (and its corresponding inverter board) in, say, a 145, I only get 1 bit display options, which stands to reason. What I haven't done yet is put a Rev A or B screen in a 160/165 to see if the display limits output, or see what happens. It's on my to-do list.
There were three different displays used (with corresponding inverter boards) - Rev A (Sharp LM64P51), B (Hitachi LMG5200XTFC), and C (Sharp LM64P58 / Sharp LM64P582). It seems 140/145/145B can use any of the screens, according to various Apple docs - and certainly you see the Rev C screen used in many 140/145/145B's out there.
The Rev B display is different than the other two, with a different display cable and inverter board, and relatively rare; US Apple techs weren't even allowed to replace them with the same part but rather with the Rev C kit instead.
160/165 are *associated* in the repair / maintenance docs only with the Rev C screen. The Rev A and C screens have the same display cable (they have the same Apple PN), same capacitors, but have different inverter boards... however, you do see these displays and boards mixed in the wild.
I haven't been able to find spec sheets on any of these displays to confirm whether or not the Rev A or B screens are in fact strictly 1 bit. When I put a Rev C display (and its corresponding inverter board) in, say, a 145, I only get 1 bit display options, which stands to reason. What I haven't done yet is put a Rev A or B screen in a 160/165 to see if the display limits output, or see what happens. It's on my to-do list.
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avadondragon
Well-known member
Well I was looking at possibly picking up a 140 and trying out the display in my 160. I noticed when I was researching the recap on these displays that they have the exact same PCB element and thus the same caps to replace. Thought it might be worth trying at least.
avadondragon
Well-known member
I found a fairly reasonably priced source for these LCDs - $66
https://www.yoycart.com/Product/574060630467/
or
https://www.yoycart.com/Product/528329894933/
https://www.yoycart.com/Product/574060630467/
or
https://www.yoycart.com/Product/528329894933/
desertrout
Well-known member
Wow - nice find!! Almost 9000 available?!
beachycove
Well-known member
Off topic, but would anyone a) know a source for the ACTIVE matrix panel used in the PB180, and b) whether it would work without further hacks in a PB160?
I sold my 180 some years back and have come to regret doing so — but I still have a functional 160. It’s hard to get excited about the 160’s screen, though, even after a recap.
I sold my 180 some years back and have come to regret doing so — but I still have a functional 160. It’s hard to get excited about the 160’s screen, though, even after a recap.
dankcomputing
Active member
I tried the Rev A (LM64P51) in a Powerbook 160 and I got a usable picture, at least for about 30 seconds. After that the bottom half disappeared, but I think that's a problem with the screen as it came from a very broken machine. The picture was still greyscale and there was no change in the number of greys available in Monitors.
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Shaddam IV
Well-known member
croissantking
Well-known member
Indeed, I had a 145 and the LCD worked in my 165, including in 4-bit greyscale. The part number was a bit different though - it might have been a Rev B.
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Has anyone successfully ordered from here for a PB160?
