Epson Powerlite 3020e video issue

[tibimakai]

I have just picked this projector up, for $20.
It starts up, shows no error lights. Menu shows on screen, blue screen is on.
When I play a movie, the sound is on and a small line at the top is the video signal.
I can see a double image, like in a 3D, side by side view only.
Anybody has any experience with projectors?
I did not open it up yet. I don't have the remote for it.
I believe that this is a 3LCD type projector.
Any help, would be appreciated.

[tibimakai]

Re: Epson Powerlite 3020e video issue

I have tested, the HDMI, Component, composite and VGA inputs and none of them show any image. It will show the same line on top.
When I placed a picture on a USB stick, it showed a beautiful image.
I'm guessing, that maybe there is some vertical, or horizontal sync issue.
I will have to open it up, and see what is inside.

[freakaftr8]

Re: Epson Powerlite 3020e video issue

Definitely a problem with the signal processing board. Is there a processor that takes all incoming connections that might be separate from the USB connection?

This is where a heat gun is your best friend

[tibimakai]

Re: Epson Powerlite 3020e video issue

I have just removed the top cover.
I will have to study it first and I will take some pictures, and I will post them here.
A coworker said, that there might be some kind of horizontal sync issue.

[freakaftr8]

Re: Epson Powerlite 3020e video issue

Sync issue? Wonder if somebody was in the service menu play with offsets? Or possibly a corrupt eeprom

[tibimakai]

Re: Epson Powerlite 3020e video issue

I have picked it up, from a service center.
I have done some research and it seems like, nobody is selling only the mainboard.
It is for sale, with the optical engine together, which is almost $1600(!).
In that tiny horizontal line, the video plays OK.
It must be something, that is common to all video sources.
Most of the chips, are Epson and most likely, are proprietary(no info about them).

[freakaftr8]

Re: Epson Powerlite 3020e video issue

Damn Epson.. should of stuck to dot matrix printers. Lol. Take a picture of the mainboard.

[tibimakai]

Re: Epson Powerlite 3020e video issue

I was planning to take some shots, but I did not have time. I have the board out, at least.

[tibimakai]

Re: Epson Powerlite 3020e video issue

I have started inspecting the board, but I did not see anything obviously wrong.
I have also started identifying ICs on the board.
Unfortunately, I can't find any info, about most of the ICs. Most likely, they are proprietary Epson Ics.
There is a ST FLi32626H (Single-chip enhanced LCD TV controller), Lattice LFXP2-5E-5FTN256C (available at Digikey), 2 x Epson EV0805SA, Epson EV2006XA, EPSON E07140K0B, 2 X IDT V105ADAG/ZA51331J, PANASONIC MN864773AKE (HDMI), TEXAS INSTRUMENTS TMDS261B (2 in 1 HDMI switch).
These are some quick phone pictures. In the weekend, I will take some proper ones, outside at sun light and with camera and stand.

[tibimakai]

Re: Epson Powerlite 3020e video issue

This projector, is an LCD based projector. It has three tiny LCDs, for the three colors, red blue and green.
My issue is, that on all the signals, I have the same issue, 99% of the image is gone. Only that tiny top line is a good image.
Another weird thing is, that in that tiny band the image is doubled, side by side.
It is very clear and sharp, and shows the right image that should be there.
In a TV, could be a T-con board issue, or a mainboard issue.
Visually, I don't see anything wrong on the board.
Another weird thing that I have noticed that, when there is a video source plugged in, I can't bring up anything(Manu, Source) on the screen.
I have no idea where to look.

[freakaftr8]

Re: Epson Powerlite 3020e video issue

I would start by heating up the board especially around processors and ram IC's. I wouldn't worry so much about the Panasonic chip as that is the HDMI codec. Something that video processes all inputs but odd that the menu is good. Maybe the EV08055a and ram modules there. The big E silver processor. Did that have a heat sync?

[budm]

Re: Epson Powerlite 3020e video issue

"When I placed a picture on a USB stick, it showed a beautiful image."
That means the T-CON board is OK, it is something on the main board but what is exactly bad I do not know.

[tibimakai]

Re: Epson Powerlite 3020e video issue

It seems like, the USB ports and the Menu system, bypasses the video section.
Something that is common to all the inputs may be causing the problem, but without a SM and proprietary parts, will be almost impossible.
It could be the ST FLi32626H?
http://www.st.com/en/display-controllers/fli32626h.html

[freakaftr8]

Re: Epson Powerlite 3020e video issue

Doubt flash memory. Unless it took a bad firmware?

[tibimakai]

Re: Epson Powerlite 3020e video issue

There is no firmware available for this projector.
What could cause side by side image?
I have even removed the auto iris mechanism, and opened up the two shutters, to be sure that nothing blocks the light. There was no change.
I will remove one of the LCDs and I will tun on the projector, with the LCD installed on the top of the board.
This way, I can see the actual picture, that will show up on the LCD, is exactly what I'm seeing on the wall.

[budwich]

Re: Epson Powerlite 3020e video issue

side by side imaging is used for 3d display with appropriate glasses. is there any kind of factory reset capability in the menu somewhere?

further, have you looked at the user manual? it is possible that you may need a remote if you can't find some sort of factory reset.

[tibimakai]

Re: Epson Powerlite 3020e video issue

There is a factory reset, and I have reset it a couple of times already. No change though.
Last night, I have programmed my Logitech Harmony Touch and I have tried it, but did not react to any of the commands.

[tibimakai]

Re: Epson Powerlite 3020e video issue

It is fixed.
I have programmed my Logitech Harmony Touch remote, reassigned the signal from the hub(RF) to the remote(IR) and the remote worked right away, with the projector.
I have hit 3D Format on the remote, went two steps down with the remote(blindly, no image) and hit OK. I had an image!!
It was 3D top and bottom, but at least it was an image. Side by side worked as well, but Auto and 2D went back to the thin top bar.
I still have a hard time, getting white instead of yellow, that I'm getting now.
These ribbon cables are the worst, super thin and no tabs to grab them.
Hopefully, I will be able to get it eventually, inserted properly.
Some they sell these, for $700-$1200.
I got it for $20. No remote, 2x3D glasses, or wireless transmitter though.
Thank you for the help.