Acer AL1916 pink tint

[sequille]

The "acer" and "no signal" screens don't seem to exhibit this behavior. The moment I plug in the VGA cable the PC image gets displayed with a strong pink tint. The "menu" and "<" ">" keys do noting. "Auto brightens up the screen and does some positioning, but it's still pink, only less so; at the end of the adjustment it goes back to its initial pink hue state. The "power" button also works OK. It's not the lamps, the pink is much more intense, more red and uniform. I suspected the logic board, no bulging capacitors there. Does anyone have any experience with this type of problem?

[selldoor]

Re: Acer AL1916 pink tint

Try a new vga cable check for bent pins and bad solder on the socket

[sequille]

Re: Acer AL1916 pink tint

The cable works OK with another monitor, re-soldered the VGA connector. No change and the "menu" key still does nothing.

[selldoor]

Re: Acer AL1916 pink tint

If you cant get to the memory maybe the eeprom is corrupt

Manual here http://www.manualslib.com/manual/269...?page=1#manual

Try turning monitor off and unplug then hold the power button in and replug

Perhaps check the button board and cable

Does the panel show ehite if you disconnect the lvds cable

Please can you update profile with country and mains voltage

[sequille]

Re: Acer AL1916 pink tint

Updated the country and mains voltage info.

Checked the buttons board and cable, continuity test OK. Unplugging + replugging while holding power didn't help. The panel is white with the lvds cable removed. I fear it's the eeprom. Do people usually re-flash the eeprom or is it unheard of/rare?

[selldoor]

Re: Acer AL1916 pink tint

You may be able to buy one ready programmed ? Pictures might help now
https://www.badcaps.net/forum/showthread.php?t=39740


Just spotted this searching for PINK- not your machine but perhaps caps on the main???

The HP 1907 does have Backlight problems,usually associated with the top set of lamps,due to poor soldering and not good quality wire used on the return wires.Sometimes a failing Lamp can give a Pink screen and needs replacing,BUT if the Black Screen is more Crimson than Pink,then the only time I have seen this,was caused by faulty capacitors on the Logic Board.

[sequille]

Re: Acer AL1916 pink tint

Universal LCD controller board from China it is then $7 delivered with all the cables included, jumpers to set resolution.

[selldoor]

Re: Acer AL1916 pink tint

That will be interesting - not seen one before. Please update when you try it.

[Agent24]

Re: Acer AL1916 pink tint

It might work, as long as the pinout for the LVDS connector is correct, or you can rewire it if it's not. It sounds like an interesting device. I might have to give one a try myself and see what it's like.

If it doesn't work... some other ideas:

I have had buttons not working due to shorted debounce capacitor or bad tactile switch.

A shorted protection diode to ground or open series component on the Green input line (eg: loss of green signal) could cause a pink image.

[sequille]

Re: Acer AL1916 pink tint

Just a smd resistor and capacitor on the green input line, both ok.
Attached a picture of that universal controller. Don't hold your breath though, delivery time is 15-30 business days

[budm]

Re: Acer AL1916 pink tint

I wonder how it will know which pins are power pins for the LCD panel will be for the T-CON on the LCD panel beside the correct LVDS signal lines. You can easily damage this board or the T-con board if the power pin is not correct.
The spec sheet of the LCD panel will be required to get the pin out.

[Agent24]

Re: Acer AL1916 pink tint

I wonder how it will know which pins are power pins for the LCD panel will be for the T-CON on the LCD panel beside the correct LVDS signal lines.

I don't think it will automatically work like that. That's why I said he will have to verify the pinouts before powering it up. From the pictures I saw online (though it was for a different, but similar board) they have silkscreened the connector names on the board for the LVDS connector so it shouldn't be too hard.

[budm]

Re: Acer AL1916 pink tint

That is why I bring that up, he must be real careful.