CurtPalme.com Home Theater Forum

brenwaterys · Joined: 26 Nov 2006 Posts: 70 Location: Spokane, WA

I just got a PC-1270 switcher to use with my Sony 1271 projector and am unable to get a video signal out of the switcher. I have tried both S-video as well as RGBHV without success. The input cards into the switcher appear to be working correctly as when I put them directly into the B slot in the projector I do get video. The cards are "activated" when I select that channel in the switcher (the little red light on the input card does light up). Is it possible that the video output "card" in the switcher is malfunctioning and if so is there anything that I can check - common components that go bad, fuses (doubtful), etc...

Thanks for any help.
Benjamin

**AnalogRocks** · Posted: Fri Aug 24, 2007 4:33 am Post subject:

Can you explain how you have it hooked up? What sources in on which cards?

Welcome to the forum

brenwaterys · Joined: 26 Nov 2006 Posts: 70 Location: Spokane, WA

I have tried the below connections w/o success:

htpc -> VGA -> BNC -> IFB-10Q (in switcher) -> 5BNC -> IFB-11 (In Projector)
Denon DVD -> S-Video -> IFB-1000 (in switcher) -> SVideo (Video In Projector)
LG-DVB418 -> Component -> IFB-12A (in switcher) -> 5BNC -> IFB-11 (In projector)

Direct connections from all three options work fine, S-Video from Denon into projector, LB-DVB418 via component into IFB-12 when the 12 is in the projector, and HTPC connected directly to the IFB-11 in the projector. In fact I am using the HTPC to post this on my 92" 16x9 screen and loving every minute of it Smile

.

All of the cabling is Monoprice stuff that I have had good luck with so far. The only cable that I haven't tested to know for sure that it works is the 5BNC as it came in the mail brand new today. I will pull out a multi-meter tomorrow and test it for sure but somehow I doubt the brand new cable is bad. I am not getting any kind of signal at all so all 3 of the color cables would have to be bad or I should get at least something. Obviously this is probably the first thing to check but is there anything else that I can try?

Thanks for the reply
Benjamin

wkomassa · Joined: 21 Aug 2007 Posts: 101 Location: Brookfield, WI

Can you clarify - are you using the Y/C on an OUT board in the 1270? Similarly with the IFB-11 - is it in the output bus of the switcher?

Otherwise - simplify your life - see if you can find one of the multipin remote cables somewhere. That's the way mine is set up and I've never had a single problem.

brenwaterys · Joined: 26 Nov 2006 Posts: 70 Location: Spokane, WA

Whoops - I guess I did leave out the switcher to projector connection link in the list. The connections from the switcher to the projector are all being made from the Monitor board in the switcher (RGBHV and Y/C). Is there a way to change any given card to an output vs. an input? What do you mean by "output bus" - are these the first 2 slots next to the power supply? If so these are both occupied by what I believe is a standard output board that includes RGBHV, Y/C, and Composite.

The IFB-11 is installed in the projector and is connected to the Monitor out on the switcher via a 25' Monoprice 5BNC cable.

I will look for one of the multi-pin cables but if I read correctly that cable has a significantly lower bandwidth than using the 5BNC connections. I'm running 720p so maybe the cable would be enough?

Benjamin

wkomassa · Joined: 21 Aug 2007 Posts: 101 Location: Brookfield, WI

I've run my 1252 at 720p using the fat Sony cable and it works. The picture at 720p isn't that great but I've always believed that was a limitation of the 1252 as opposed to the cabling. Can anyone comment?

Also, some IFB cards can be configured to input or output via dipswitch or external switch. I don't have much experience with many of them but the IFB-12 can do that.

I do know that when i pass a component signal into my IFB-12, connecting RGBHV inputs to the output of the switcher will either give no picture or a predominantly green image. I'd guess this is because the switcher doesn't convert the inputs when it outputs - but again, not sure. The same might be true for inputting video or Y/C and trying to output GRBHV from the monitor outs.

Anybody?

wendortb · Joined: 15 Nov 2006 Posts: 107 Location: Martinsville, IN

My 1272 starts to look soft at 720p, it is the limit of the tubes, not the cable. I have been running at 1080i and am very happy. The 12xx series can output 720p, but you have to have low hours and a good setup performed.

The IFB-12 card can't go above 576p(if I remember correctly) without green push. This is a limit of the card. Usually people just output 480p to it for component. If you need more than that for component, you will have to go with some other choice.

The switcher has to be set up correctly to work. Here is a link to a topic where AnalogRocks talks about setting up the switcher correctly. I don't know if you have looked on those swithes or not but my guess is that is your problem.

I am not sure about the whole input s-video output to rgbhv thing. I would guess it would not work but am not sure.

I hope this helps you out.

Travis

brenwaterys · Joined: 26 Nov 2006 Posts: 70 Location: Spokane, WA

Thanks for the links. I will double check the Single/Second/Remote2 switch tonight but I thought I tried all three settings w/o any luck. FYI - I am not trying to use this box to transcode (if that is the right term) a Y/C signal into an RGBHV signal. I was hooking this up with the assumption that if a Y/C signal was provided to the switcher via the IFB-1000 input card then the Y/C signal would be passed on to the Y/C output available in the Monitor 1 card. Am I correct in this assumption?

I was aware of the 720p limitations of the projector as well as the green push symptom with the IFB-12. With my setup using the LG-DVB418 dvd player I have had limited success, I am not getting any green push but I am getting some sync issues that adds undesirable noise to the image.
Benjamin

wendortb · Joined: 15 Nov 2006 Posts: 107 Location: Martinsville, IN

The fact that the input card lights up, according to the manual shows that the input part is working. That means something is wrong with the output.

Try setting the remote mode to 1 and the single/second/other to single. Also make sure you don't have the h & v mixed up.

The manual also says:
When cables are connected to both Y/C IN and VIDEO IN connectors, the signal input to the Y/C IN connector has priority over the one input to the VIDEO IN connector, and output from the Y/C connector of the MONITOR OUT connectors. The signal input to the VIDEO IN connector can be output from the VIDEO connector of the MONITOR OUT connectors only when no cable is connected to the Y/C IN connector.

Translation: disconnect all s-video cables to the switcher.

If it still doesn't work after all of this, try connecting the switcher to a computer monitor.

Travis

**AnalogRocks** · Posted: Sat Aug 25, 2007 4:38 am Post subject:

brenwaterys · Joined: 26 Nov 2006 Posts: 70 Location: Spokane, WA

Ok - one last shot before I throw in the towel and call this a bad purchase. I have tested the 5BNC cable with a multi-meter and it is good. I have tried all three positions of the SINGLE/REMOTE2/SECOND switch, I have tried all of the available IFB input cards that I have w/o luck. Unfortunately I don't have the necessary cabling/adapters to test this out with a computer monitor but as all of the inputs on my projector work fine I don't think this would show much.

The switcher comes on and sounds like it runs through each card powering it up. When I select a given input the light on that card comes on. When a signal is fed to that card I hear another 'click' but regardless of what I try I cannot get a signal out of this box via either the 5BNC cable or the Y/C output (obviously I only expect Y/C output when a Y/C input is selected).

Any final suggestions or do I cut my losses here?
Thanks again for everyone's help.
Benjamin

**AnalogRocks** · Posted: Sun Sep 09, 2007 8:15 pm Post subject:

Hi Benjamin,

Did you ever get this going?

brenwaterys · Joined: 26 Nov 2006 Posts: 70 Location: Spokane, WA

Unfortunately not.