Post by ronaldus on Jan 6, 2021 17:13:49 GMT -5
Hi All this afternoon i did some projector adjustments and i uses a very "heavy" test pattern a full screen with blocks of 1on 1 off H and V lines
After using this for about 20 minutes everything started to shake heavily see here:
cernbox.cern.ch/index.php/s/4fAWtnU5KH05iHM
When loading another picture it stopped and when I went back to the first test pattern the shaking was gone but came back slowly. I stopped the projector and i did a small modification to the HDMI card (shorting a ferrite bead of the green channel) when I put the card back in the projector it didn't give any image. It starts up normally. All the fans came up but no HV crackle.
It looks as if the projector switched off after having no sync for a few seconds then it also stops the HV.
I tried to reseat the HDM but no luck.
Thats's it for the moment I didn't have more time
I hope it's not the HVPS because I don't have a spare for that. I have another HDM but since the projector starts up I doubt that it is that.
Regards,
Ron
After using this for about 20 minutes everything started to shake heavily see here:
cernbox.cern.ch/index.php/s/4fAWtnU5KH05iHM
When loading another picture it stopped and when I went back to the first test pattern the shaking was gone but came back slowly. I stopped the projector and i did a small modification to the HDMI card (shorting a ferrite bead of the green channel) when I put the card back in the projector it didn't give any image. It starts up normally. All the fans came up but no HV crackle.
It looks as if the projector switched off after having no sync for a few seconds then it also stops the HV.
I tried to reseat the HDM but no luck.
Thats's it for the moment I didn't have more time
I hope it's not the HVPS because I don't have a spare for that. I have another HDM but since the projector starts up I doubt that it is that.
Regards,
Ron
