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Yamaha YSP-4000 Digital Sound Projector

by dps5889 / August 25, 2011 5:30 AM PDT

My ysp-4000 has suddenly interpeted my cable hdmi connection as dvi. The prior 18 months it identified the connection as hdmi. I have swapped cable boxes and hdmi cables, no fix. This misinterpetation I believe has caused a loss of sound for the cable connection. I have had cable service examined, Time Warner Cable, their feed is good. I have two ysp-4000's. I swapped them out and the problem is related to the specific ysp-4000. I have checked and double checked the settings on both ysp-4000's. Settings are the same. Both ysp's have no problem with their PS3 connections. What could be causing this sudden problem. These sound bars fit my needs perfectly. Any thoughts?

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by R. Proffitt Forum moderator / August 25, 2011 5:36 AM PDT

Cable companies push out firmware updates and bizarre things like this happen. It sounds like one unit is working so the best thing to do is to use that one with this cable box.

I don't expect things to get better in the industry because of all the copy protection built into HDMI (HDCP).

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Yamaha YSP-4000 Digital Sound Projector
by 3coursedinner / August 25, 2011 9:55 AM PDT

Just going to shoot some arrows here.
I don't know if it makes a difference if the cable (box or just coax?) is plugged into the DVD input by mistake.
From what I could see (Yamaha doesn't allow you to view the user manual unless you're registered) there isn't any DVI port on this thing. You use HDMI also for the PS3?
If the other 4000 works fine -- the 4000 has some kind of internal problem. I was going to suggest replacing the cable box if you have one -- the sensitvity of the problem 4000 could be an issue with this box. Cable signal strength is one thing.
Does the user manual mention anything about DVI.

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Yamaha YSP 4000
by dps5889 / August 25, 2011 11:14 PM PDT

I did check my connection everything is correct. I do use HDMI for my PS3. My first attempt to correct the problem was to replace the cable box which I did. When the problem persisted I contacted the cable company to have the line checked, it's working fine. I agree it's an internal problem with the unit. I have the exact same set up in another room. When I switched the units the problem followed to the other room. I have a tech question into Yamaha but have not received a reply (sent 8/25). Yesterday while working through solutions I got the following message from the cable box when I switched between DVD and Aux 1; Your TV does not allow display of this program through the DVI input source. Please choose another TV input source. Not really sure what this means. I have tried all 4 HDMI inputs on my TV with no resolution.
The user manual makes no mention of DVI.

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YSP 4000
by 3coursedinner / August 26, 2011 3:35 AM PDT
In reply to: Yamaha YSP 4000

the handshaking is giving the impression to the cable box that the input is DVI, not hdmi. If I'm reading the last couple of sentences in your post -- have to believe it's the soundbar. It's odd since there aren't any DVI ports on the soundbar but perhaps there is an earlier model of this unit or Yamaha used the core of an older model with DVI when building the 4000.

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YSP 4000
by dps5889 / August 26, 2011 6:54 AM PDT
In reply to: YSP 4000

Ok, today i disconnected everything from the 4000 and ran my cable hdmi and PS3 hdmi straight to my tv. I still got the attention notice from my cable box reading "Your TV does not allow display of this program through the DVI input source. Please choose another TV input source." Makes no sense to me. It's as the cable box is trying to send a dvi signal out. All settings for cable box output is set to hdmi.

I'm on hold with the cable company seeking an explanation.

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