Originally Posted by
VastSatUser
I had some picture breakup that made me start looking at the tuner signal levels, that is when I noticed the indicated signal level difference between tuners under signal detection in the setup menu.
You can usually tell if you are viewing tuner 2, when you change channel the signal level indicator at the bottom right of the screen shows low signal.
I think that the picture breakup occurred on tuner 2 but I am not sure if constantly low signal level indication is linked.
Humax support asked that the PVR be returned to them to investigate the problem, they phoned a week later to advise that no fault was found and their reference PVR had the same reported level difference between tuners.
Humax felt that the second tuner had enough signal to work correctly.
A few replies in this forum noted that the UEC 4639 has a similar problem and a work around fix, something that can not work on the HDR-1003S.
Not sure where to go from here, at least the picture breakup does not occur often.
From the above it sounds as though Humax doesn't understand the problem. When I first contacted UEC about the same problem they similarly told me that "the second tuner had enough signal to work correctly". Which was true for a few months and then conditions changed in some way and the signal was degraded to such an extent that it couldn't get a lock. Next when I contacted UEC they emailed me with a solution in 20 minutes [the attenuator]. UEC's explanation was:
This is because of too much signal level tuner 1 and its again amplified and feeding to the second tuner . So the higher half will cut off when it reaches the second tuner.
I don't quite understand it because the signal level on tuner 1 as indicated by the unit is not that high however their solution worked perfectly so they understand what the problem is. UEC is providing the solution at no cost to me so I guess that they consider it a design fault [which is the way I see it].
Either Humax doesn't understand the reason for the problem [unlikely] in which case you could tell them what happened with the UEC tuners or they understand the problem and don't want to pay for a solution [which will be much more expensive due to access or even a board replacement depending...] or something else that I haven't thought of.
My best guess is that they know about the problem and what the solution is but prefer to just pretend that it doesn't exist for financial reasons. If your unit is still working you could just forget about it but surely as you went to the trouble of sending your unit back then it's at least worth an email or two to Humax.
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