Apple Cinema display 23" ... detection problem

[stj]

Re: Apple Cinema display 23" ... detection problem

maybe it's related to pins not used in that monitor.

[Porto]

Re: Apple Cinema display 23" ... detection problem

maybe it's related to pins not used in that monitor.

ah, ok, that can be the case.

I've ordered some of those IC's so I'm going to replace it anyway... maybe it has a function so the chip has to be present.

I know of a few other identical display's which has problems with the Tcon board... I wonder if this short to ground is a regular fault with these screens.

[budm]

Re: Apple Cinema display 23" ... detection problem

Who makes the LCD panel? LG?

[Porto]

Re: Apple Cinema display 23" ... detection problem

Yes, I believe it's an LG.Philips LM230W02 IPS panel.
It sure has a very nice and bright picture with very natural colors.

[stj]

Re: Apple Cinema display 23" ... detection problem

i thought stuff begining "LM" was mostly from Sharp?

[budm]

Re: Apple Cinema display 23" ... detection problem

Spec:

[Ixusss]

Re: Apple Cinema display 23" ... detection problem

LM230WU3-STC1 in my case

[hexdiy]

Re: Apple Cinema display 23" ... detection problem

Hey Porto, we're probably not talking Schmitt trigger but EEPROM here. I wonder if it's U8 you've removed. I believe U8 is an EEPROM responsible for communicating EDID info to your computer with the monitor still switched off, and PSU checked out as functional.
Once the monitor is properly switched on, I think U1 will take over EDID info over 2 wire serial com (SDA +SCL)
Hee man, ik spreek ook Nederlands!

[stj]

Re: Apple Cinema display 23" ... detection problem

hej hej.

but most people dont speak "viking", so best to use english here.

[hexdiy]

Re: Apple Cinema display 23" ... detection problem

Nej snakke Norsk, Svenska, Dansk, but I've got the drift... Sorry. English my pleasure.
Although "Nederlands" is not to be counted amongst the "Northern Germanic" aka "Viking" (no offence intended) languages Philips I2C is included in the DVI protocol as a "2 Wire Protocol", carrying SDA (DDC Data) and SCL (DDC Clock).
Best read my post #27 here on the subject.

[Porto]

Re: Apple Cinema display 23" ... detection problem

Hey Porto, we're probably not talking Schmitt trigger but EEPROM here. I wonder if it's U8 you've removed. I believe U8 is an EEPROM responsible for communicating EDID info to your computer with the monitor still switched off, and PSU checked out as functional.
Once the monitor is properly switched on, I think U1 will take over EDID info over 2 wire serial com (SDA +SCL)
Hee man, ik spreek ook Nederlands!

Hoi!

Nope, I removed UD1 on the Tcon board, it was shorted to ground.
I don't think it's an EEPROM, but why it's there, beats me!

Helaas mogen we hier geen Nederlands praten, vindt Budm niet leuk!
(Unfortunately we are not allow to speak Dutch in here, Budm won't be happy about it! )