DM800 HD tune failed when COOL

[maxpower2014]

Original DM800 (not clone)

Devicename: dm800
Enigma Version: 2011-09-13-experimental
Image Version: Experimental 2011-09-06
Frontprozessor Version: VNone
Webinterface Version: 1.6.8
Tuners
Tuner A: Alps BSBE2 (DVB-S2)

Worked fine for many years, but now (without changing anything) if I use internal HDD as a video source for more than 10 minutes or turn off receiver for the same time (so dont use DVB tuner) it could not tune to HD channels (Tune Failed) when turned back on. SD channels work fine. After 5 minutes from turning on it tunes to HD, but picture freezes from time to time, but after 10 minutes it starts working fine.

So, the conclusion is that the failure is temperature dependent.

1) Tried to turn off HDD power cable - no difference.
2) Measured the input voltage - 11.99v all the time.

What could be the reason? Bad soldering on the tuner board or capacitors on the main board need replacement? They look undamaged (on the surface).

 

[rizwanawan]

Do you have any Diseq ?

 

[maxpower2014]

No. Just twin converter

 

[bogyman]

You have an old image . Try to update to latest image and drivers

Sent from my GT-I9505 using Tapatalk

 

[maxpower2014]

But there were no problem with that image for 2,5 years!
I'm sure that this is a hardware problem.

 

[spawk]

hello i have dream 800 hd original and i flash it 1 time per year i have this box from 2005 flash it with new image like newnigma stable and test if you have some problem sure ur problem are resolved after

 

[BM300]

Before flashing with any image, do not forget to take a backup of your existing image. Just in case.
Why not keep your box running all the time?
You do not need to unplug the box, Just leave it on standby when not in-use.​

 

[maxpower2014]

I never turn it off (in deep standby), but when I use HDD or USB to play videos, I cant get back to HD channels immediately, because tuner needs to warm up )