Sony Projector HDMI failures - help!

[betty boop]

is it possible Tony that one of the ports are no good ? active fibre cables have been known to do this on jvc projectors... 

 

have you tried a 4k uhd player with a short certified cable to both ports ? this is probably the best bet...

 

can you buy a short passive certified cable to see if that works ? it will be a way to check cable issues now and in future and eliminate them if an issue

 

https://www.ezyhd.com.au/product/hdmi-8k-2-1-cable-certified/?

[Tony M]

Hi BB

 

The pictures I have posted are via a short certified 8K cable from a 4K capable Foxtel PVR as a source.  Yes, they suggest there is a problem with HDMI1.  However HDMI1 works perfectly with the TEAC STB, suggesting there is no problem with the port itself.

 

So, the evidence is contradictory and I am confused! 

 

Another thing I forgot to mention in the previous post is that the picture via HDMI 1 is intermittent - it disappears and re-appears every few seconds - hence the "->HDMI 1" symbol in the top left hand corner - this usually goes away with a stable picture.

Edited November 26, 2023 by Tony M

[betty boop]

1 minute ago, Tony M said:

The pictures I have posted are via a short certified 8K cable from a 4K capable Foxtel PVR as a source.  Yes, they suggest there is a problem with HDMI1.  However HDMI1 works perfectly with the TEAC STB, suggesting there is no problem with the port itself.

the teac stb is no test of the capabilities of the hdmi port apart from it can what a stb is capable off which is pretty low grade video and audio

 

the main test is as i indicated if you can hook up a 4k uhd player with a certified cable and it actually passes full bandwidth 4k uhd and HDR and with full band width audio...

 

2 minutes ago, Tony M said:

So, the evidence is contradictory and I am confused! 

not really no .. its showing it can pass a base signal but still gone by the sounds .. if can test a full band width signal through it will know if port is fully gone and not able to or not ? 

[Tony M]

The STB is capable of 1080p, which is passed through the port with no problems.  The picture is correct resolution and sharp, unlike the Foxtel image I posted.

 

I understand you are saying the port is probably damaged and is no longer capable of passing a full 4K signal and this seems to be the case.

 

What I don't really understand is why it works so well with the TEAC, but not with the Foxbox, even when I reduce the output to the same resolution as the TEAC.

 

The again, maybe I'm overthinking it and the port is faulty for whatever reason.  That leaves me wondering what is causing the port failures.  I've searched the internet and found very little about port failures with active cables.  The dealer insists they have sold many of these projectors and cables and I'm the only one who has had this issue.  I've dealt with him for 40+years and I trust him on this.   

[betty boop]

50 minutes ago, Tony M said:

What I don't really understand is why it works so well with the TEAC, but not with the Foxbox, even when I reduce the output to the same resolution as the TEAC.

 

just chipsets tony... 4k uhd is a whole another ball game.. something has clearly failed at the chipset that can do a 1080p handshake but 4k chipset in play is not a goer... keep in mind there are three chipsets in play.. the one at stb. one at projector and one in the cable as its an active one.. if you have switcher in play theres a 4th one as well. all have to shake hands for it to work

 

50 minutes ago, Tony M said:

The again, maybe I'm overthinking it and the port is faulty for whatever reason.  That leaves me wondering what is causing the port failures.  I've searched the internet and found very little about port failures with active cables.  The dealer insists they have sold many of these projectors and cables and I'm the only one who has had this issue.  I've dealt with him for 40+years and I trust him on this.   

 

there have been issues of active cables blowing hdmi ports / chipsets on projectors .. its not un common..infact to point jvc usa did a public service announcement and we had even likes of Mike G on avsforum suggesting ways around. the particular fibr cable in question, as indicated when we tried it in evilc system it caused issues as well and was best dispensed ! 

[Tony M]

Thanks BB.  I'll keep searching AVS Forums then.

 

I'm trying to find something that I can show to the dealer to show that HDMI cables destroying HDMI port chipsets is a thing.   

[betty boop]

10 minutes ago, Tony M said:

Thanks BB.  I'll keep searching AVS Forums then.

 

here's one

 

https://www.avsforum.com/threads/official-jvc-rs4100-nz9-rs3100-nz8-rs2100-nz7-rs1100-np5-owners-thread.3226551/page-794#post-62117914

 

JVC was getting reports of HDMI ports no longer working. Projectors were sent in and JVC found the HDMI circuit tripped. This would be an overvoltage issue. JVC then started asking what HDMI cables were being used. Reports came back that the cable was the Ruipro. JVC then purchased the Ruipro cable for testing and confirmed that the cable ran hot (higher voltage). JVC then recommended people add an HDMI voltage inserter to their chain, to protect the HDMI input. And JVC does not recommend that cable. This was the 4k Ruipro cable. But I would be concerned about the 8K cable. Tripping the HDMI circuit does not happen right off the bat. But has happened many times after prolonged usage of that cable.

 

edit this is just mike G letting folks know late last year.. this goes way back ... i'll try to find the public service announcement ...

 

Edited November 26, 2023 by betty boop

[betty boop]

here's one from 3.5 years ago...

 

https://www.avsforum.com/threads/official-jvc-rs3000-nx9-jvc-rs2000-nx7-n7-jvc-rs1000-nx5-n5-owners-thread.3038288/page-1404#post-59793070

 

I guess I am about to throw a big monkey wrench in the cable situation. I am hearing that the Ruipro runs a little hot, as in slightly high on the voltage. That helps it sending a signal, but is hard on the HDMI input on projectors. And yes, an HDMI input boards has been damaged from over voltage.

 

here's one from JVC with a blown hdmi from over voltage from active cable

 

https://www.avsforum.com/threads/official-jvc-rs3000-nx9-jvc-rs2000-nx7-n7-jvc-rs1000-nx5-n5-owners-thread.3038288/page-1402#post-59782800

 

Thanks everyone for the suggestions.
I have contacted projectorscreen team and within 45 mins got call from JVC team. They have done usual checks They confirmed that issue could be damaged HDMI chip set in NX7 due to HDMI cable causing “over voltage”. JVC suggested to use https://www.amazon.com/C2G-42236-Powered-Voltage-Inserter/dp/B00LQT760Q on projector end.

Anyway JVC took my CC details and sending me a new unit and I can return mine from 5 days of receiving the new one.

 

note the device jvc suggest to use for active cable to keep handle on the voltage. i have no experience with these units to comment but yeah just making the point over voltage from hdmi can blow chips sets as per above ... 

Edited November 26, 2023 by betty boop

[Tony M]

Very enlightening - thanks very much BB.  I think you're probably spot on - HDMI 1 is damaged and the function with different sources is just weird.  It might work perfectly with some sources/cables, partially with others and not at all with most.

 

Funny thing is that the dealer gave me one of those voltage inserters to try mainly to see if it made HDMI 1 work again.  Of course it made no difference to the current situation.  However, I now see it has been put forward as a preventive measure and I can see how it could block the voltage from the cable and instead insert the voltage at the projector end from the projector itself.

 

I was going to take it back but I think I'll insert that on HDMI 2 in the hopes of preventing that going the way of HDMI 1.  Does that make sense to you?

[betty boop]

3 minutes ago, Tony M said:

Very enlightening - thanks very much BB.  I think you're probably spot on - HDMI 1 is damaged and the function with different sources is just weird.  It might work perfectly with some sources/cables, partially with others and not at all with most.

tony theres probably heaps of posts between mike G where he started hinting at it 3.5 years ago from what testing jvc had done... to the most recent one i posted from late last year with the guy reporting jvc recommendation ... 

 

4 minutes ago, Tony M said:

Funny thing is that the dealer gave me one of those voltage inserters to try mainly to see if it made HDMI 1 work again.  Of course it made no difference to the current situation.  However, I now see it has been put forward as a preventive measure and I can see how it could block the voltage from the cable and instead insert the voltage at the projector end from the projector itself.

 

 

yeah it seems to be the go... id get the hdmi sorted again and then use the voltage inserter so hopefully prevents in the future ... 

 

6 minutes ago, Tony M said:

I was going to take it back but I think I'll insert that on HDMI 2 in the hopes of preventing that going the way of HDMI 1.  Does that make sense to you?

the inserter isnt going to fix the damaged hdmi port so sorry to say it will have to go back. i dont think anything you can do.. 

[Tony M]

I'm not so sure about getting it fixed.  It's out of warranty now and the fix involves replacing the main board.  Last time it was done under warranty so I don't know what it costs but likely to be a lot.

 

I still have HDMI 2 and really only need one working HDMI port - hopefully this will be protected by the voltage inserter and will last the distance.

 

I'm very grateful for your input - it all makes a  lot more sense now and at least I know the probable cause and hopefully have a way of preventing it happening again.

 

Thanks again, Al.

 

[betty boop]

3 minutes ago, Tony M said:

I'm not so sure about getting it fixed.  It's out of warranty now and the fix involves replacing the main board.  Last time it was done under warranty so I don't know what it costs but likely to be a lot.

oh gosh, understand ...

3 minutes ago, Tony M said:

I still have HDMI 2 and really only need one working HDMI port - hopefully this will be protected by the voltage inserter and will last the distance.

 

yep id stick with this one, i only use one port on my jvc and yep the voltage inserter should prevent anything in the future  

 

4 minutes ago, Tony M said:

I'm very grateful for your input - it all makes a  lot more sense now and at least I know the probable cause and hopefully have a way of preventing it happening again.

 

Thanks again, Al.

no worries i dont think its well known an issue. hopefully others reading will be aware if using active cables and what seems hopefully a relatively easy prevention.

[Benje]

@Tony M

 

if you need to borrow a 4K player to test an alternate 4K source, I have an OPPO 203 which is reasonably portable.  Of course, if your problem is solved with HDMI2 then you might be fine.

 

Let me know if you want to try a different 4K source.

 

Benje

[Tony M]

Thanks @Benje  Much appreciated.

 

But I do have several 4K sources here to experiment with.

 

Overall, I think Al (@betty boop) has given me the answers I needed and is spot on with his assessment.

 

Just waiting to find out what the cost of replacing the main board is and if Sony will fix it under warranty, despite it being out of date.  The hours are very low.  It's also disappointing that they didn't suggest any possible causes or preventive measures despite me asking about this when it was replaced/in for warranty repairs previously.