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post #1 of 6 Old 07-22-2014, 04:16 PM - Thread Starter
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Adapting M1-A to HDMI?

I just got a free projector, an HP SB21. Someday I will upgrade to something better, but this is all I have to work with for now. Here is a link to the manual:

http://h10032.www1.hp.com/ctg/Manual/bpia6001.pdf

It has an M1-A connector on it, whatever that is. From my understanding, it's basically a modified DVI connector. I want to hook this up to HDMI components, so I bought this adapter:

http://smile.amazon.com/Monoprice-10...s=m1-a+to+hdmi

It fits the projector. I hooked up an HDMI cable from my Amazon Fire TV using this adapter, and I got a video image but it looks like crap. It actually looks like analog video, and the projector automatically sets the resolution to 640x480. The projector's native resolution is 600x800, and it actually looks pretty good when hooked up to a computer using a VGA cable. But for some reason it doesn't like being converted to HDMI with that adapter.

When I try to hook up to a laptop using HDMI and the adapter, I get nothing.

According to the projector's user manual, I should be able to make this work. But that's proving to be difficult, especially because most of the settings are automatic, and I can't manually change them.

Any ideas?
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post #2 of 6 Old 07-22-2014, 07:07 PM
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Quote:
Originally Posted by bac0nfat View Post
I just got a free projector, an HP SB21. Someday I will upgrade to something better, but this is all I have to work with for now. Here is a link to the manual:

http://h10032.www1.hp.com/ctg/Manual/bpia6001.pdf

It has an M1-A connector on it, whatever that is. From my understanding, it's basically a modified DVI connector. I want to hook this up to HDMI components, so I bought this adapter:

http://smile.amazon.com/Monoprice-10...s=m1-a+to+hdmi

It fits the projector. I hooked up an HDMI cable from my Amazon Fire TV using this adapter, and I got a video image but it looks like crap. It actually looks like analog video, and the projector automatically sets the resolution to 640x480. The projector's native resolution is 600x800, and it actually looks pretty good when hooked up to a computer using a VGA cable. But for some reason it doesn't like being converted to HDMI with that adapter.

When I try to hook up to a laptop using HDMI and the adapter, I get nothing.

According to the projector's user manual, I should be able to make this work. But that's proving to be difficult, especially because most of the settings are automatic, and I can't manually change them.

Any ideas?
I'm amazed you get an image at all. I'm not sure in the manual where it says you can use HDMI (digital) for HDTV viewing. In fact, it looks like it doesn't. The only mention of connecting HDTV is by using a M1 to component video adapter.

Basically, you own a projector that predates HDMI, and doesn't have copyright protection (HDCP) on it, so it won't work well. While the projector does accept HD video, it will only do so over a component video connection into the M1 port.

Something like this:
http://www.amazon.com/25ft-M1-A-Comp...a+to+component

No current era Blu-ray players have component video output.
Cable television tuners do have this connection typically.
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post #3 of 6 Old 07-23-2014, 05:23 AM - Thread Starter
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Quote:
Originally Posted by AV_Integrated View Post
I'm amazed you get an image at all. I'm not sure in the manual where it says you can use HDMI (digital) for HDTV viewing. In fact, it looks like it doesn't. The only mention of connecting HDTV is by using a M1 to component video adapter.

Basically, you own a projector that predates HDMI, and doesn't have copyright protection (HDCP) on it, so it won't work well. While the projector does accept HD video, it will only do so over a component video connection into the M1 port.

Something like this:
http://www.amazon.com/25ft-M1-A-Comp...a+to+component

No current era Blu-ray players have component video output.
Cable television tuners do have this connection typically.
Thanks, that answers my question. I guess I'll have to just use VGA until I can afford a new projector.

You made me think of something when you said "HDCP." I completely forgot to mention that although I can see the Amazon Fire TV over HDMI, I cannot actually play video, only navigate the menu. Now it all makes sense.
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post #4 of 6 Old 07-24-2014, 06:25 AM - Thread Starter
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How about hooking up my projector to a PS3? Could I do it by adapting both the projector and the PS3 to composite video?
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post #5 of 6 Old 07-24-2014, 09:09 AM
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Originally Posted by bac0nfat View Post
How about hooking up my projector to a PS3? Could I do it by adapting both the projector and the PS3 to composite video?
The PS3 offers component video output along with composite video. You don't 'CONVERT' from HDMI. That's not what you want to do for sure.

Get the PS3 component video A/V cable and hook it up to the M1 to component video adapter I recommended.

You will need this:
http://www.amazon.com/Playstation-An...nt+video+cable
and this:
http://www.amazon.com/Component-Vide...male+to+female
(or these: http://www.amazon.com/Female-Coupler...male+to+female )

along with the previous linked M1 to component video adapter.

This SHOULD give you HD video up to 1080i from the PS3 to the projector.

You can still use composite video if you want. The PS3 I believe shipped with a composite video cable.
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post #6 of 6 Old 07-24-2014, 09:20 AM - Thread Starter
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Great, thank you! I will give this a try, hopefully it works. Will report back.
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