How to retune the PVR80
Click here for photos of inside the box.
Click here for photos of inverting the Hard Drive and fitting a fan
Click here for photos of updating the firmware.
The information here is provided for use at your own risk.
It absolutely WILL invalidate any guarantee
This sort of modification shouldn't be necessary! Normally, my advice would be to take it back and get a replacement - although, as I think it
could be an inherent problem, the same problem could occur again.
As I particularly like the general look and feel of the software - especially the EPG - and I was unable to find a similarly-priced
box with the same features, I decided to take the bull by the horns and 'go for it' !
|Connecting the cooling fan across the Hard Drive's 12 volt supply results
in the fan running continuously - even when the PVR is on Standby. I cobbled together a simple temperature control circuit using
easily-obtainable parts so the fan only runs when it's required to cool the box.|
Any small low current LED can be used - or it can be omitted altogether.
I have deliberately not provided any construction details as you should not attempt this modification unless you're confident
(and competent) to do it.
|Four holes were drilled in the blanked-off slot behind the PVR's right-hand drop-down
panel and the small pCB was attached with spacers. Besides the two fixing holes, a third is used to show an LED indicating the
fan is running - or just about to - and the fourth hole is to insert a small screwdriver to adjust the temperature at which
the fan starts running.|
The NTC 10k thermistor is connected with about 6 inches of wire and attached to the Hard Drive's mounting bracket with a cable tie.
|I attached the PCB with a couple of brass cheese-head screws which I had available.
Chrome cross-head screws would be neater but, as they're hidden behind the drop-down panel, appearance doesn't really matter.
I also made a similar unit for the Humax 9200T using Veroboard, which you can see here.