Sony LMD-2110W LCD monitor shuts down when warm

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

"Complete shutdown. No backlight and front green status light turns off. Can only cycle power back on by removing mains cable."
https://www.badcaps.net/forum/attach...1&d=1565715023
After close inspection of the inverter board, I do not see any error feedback pin on the inverter board to tell the monitor to go into shutdown due to error on the inverter board.
Please check the Voltages on that CN801 connector when it is working and when it goes into shutdown.
Also look at the bottom side of the inverter board around the inverter transformer to see if it has any sign of over heating.

I am assuming you mean CN701 Budm?

here are the voltages when the power is on:

CN701 power supply Board voltages while On

5v - 5.066
5v - 5.066
GND - 0
GND12v_OUT - 12.25
PWR_OFF - 5.611
GND - 0
3.3V - 3.428
3.3V - 3.428
LCD_ON - 2.991

Just waiting for shutdown to do off readings will post in a few mins
I hope I'm on the right connector

[nomoresonys]

Re: Sony LMD-2110W LCD monitor shuts down when warm

How about the Voltage readings at the inverter board connector when it is working and when it goes into shutdown?

+10, again just be careful what you touch on inverter, potentially DEADLY voltage.

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Ah Found CN801 on the inverter board here are the voltages while power is on:

LCD_ON - 2.992
3.3V - 3.428
3.3V - 3.428
GND - 0
GND - 0
12V - 12.14
12V -12.4

Just awaiting shutdown to give you the next set of readings.

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

+10, again just be careful what you touch on inverter, potentially DEADLY voltage.

Being very careful tnx for the reminder.

It seems to be taking longer to go into shutdown with the cover off

[budm]

Re: Sony LMD-2110W LCD monitor shuts down when warm

You have two column of pins, how about the right column where you have LCD_BR (backlights brightness), 5V_AUD?

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

You have two column of pins, how about the right column where you have LCD_BR (backlights brightness), 5V_AUD?

unsure where I need to probe to get this second set of voltages is I think I can see the second set but they are right under the first set and my DM probe would touch the first column of pins while trying to read can I take the reading from the area marked in red on pic attached

[nomoresonys]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Maybe, measure the second one down if it's 5 instead of 3 volts, then it's the other row.

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

It's difficult to get the probe into the connector where the wires enter the connector on the rear set of cables

[nomoresonys]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Measure the pins you highlighted in red, right from the top.

[budm]

Re: Sony LMD-2110W LCD monitor shuts down when warm

unsure where I need to probe to get this second set of voltages is I think I can see the second set but they are right under the first set and my DM probe would touch the first column of pins while trying to read can I take the reading from the area marked in red on pic attached

You need the skinny probe to probe from the wire entrance side of the connector.
At this point do not worry about it yet about the second column.
Left column you report are for the ODD number pins. I.E. pin 13 is for LCD_ON
Right column is for the EVEN number pins. I.E. pin 14 is for LCD_BR

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

The monitor has now gone into shutdown these are the readings while in shut down on the pins marked in the previous picture from top to bottom
1 - 2.993
2 - 3.428
3 - 3.427
4 - 0
5 - 0
6 - 12.14
7 -12.16

Seems like this set of pins is connected to the top column which I can reach fro the opposite side too

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Ok this is strange the monitor is still in shutdown as in no Green status light on the front panel or input indicator lights but I can see the backlight is on. This is new behaviour. prior to this if the green power light was off the backlight would also be off

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Still in shutdown backlight is glowing non of the inputs are selectable until I power cycle by pulling the mains cable.

[Diah]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Pls explain a little further do you mean trying the sdi and composite inputs instead of the hdmi? I am feeding the monitor with a compliant HDMI signal via a Blackmagic Mini Moniter Ultra via thunderbolt to HDMI 1080p at 50hz

use other source to feed the monitor direct as stand alone. such android box or mini pc try different resolution to narrow the timing of shit down . i think this behavior are signal shut down.

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

use other source to feed the monitor direct as stand alone. such android box or mini pc try different resolution to narrow the timing of shit down . i think this behavior are signal shut down.

I can certainly give this a try.

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Diah just to clarify the monitor will enter shutdown even without a source connected.

[Diah]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Diah just to clarify the monitor will enter shutdown even without a source connected.

there are no Monitor stay on without a source connected.

[Diah]

Re: Sony LMD-2110W LCD monitor shuts down when warm

we said give it source as stand alone with different resolution.. to know which resolution will hold it on long time in case its signal shut down. this is test.. to narrow issue

[zx81]

Re: Sony LMD-2110W LCD monitor shuts down when warm

we said give it source as stand alone with different resolution.. to know which resolution will hold it on long time in case its signal shut down. this is test.. to narrow issue

Can remove the Blackmagic output box and feed the monitor directly from a laptop via HDMI at different resolutions and report back the findings.

Tnx.

[budm]

Re: Sony LMD-2110W LCD monitor shuts down when warm

Ok this is strange the monitor is still in shutdown as in no Green status light on the front panel or input indicator lights but I can see the backlight is on. This is new behaviour. prior to this if the green power light was off the backlight would also be off

It went into sleep/standby mode due to no video signal detected. LCD_ON signal should also go away to turn off the backlight during sleep/standby mode.