Hello,
Since this category also states Video Sources, i thought this is the correct place to post. If not, please inform me to remove.
A little intro :
Since the transition from Analog to DVB-T signal in Greece happened somewhat late (2-3 years ago) , lots of people i know asked me what set-top box to get to receive the new DVB-T channels.
Crystal Audio is a Greek Company that designs and manufactures electronics from Home Cinema Speakers to DVB-T Tuners and from Media Players to Wireless A/V transmitters.
So , i chose to promote "our own" company instead getting some foreign design. I got almost 9-10 devices for me and people i know, all of them worked flawlessly till a month ago, afaik.
The only one that stopped working is the one that my aunt had. It has never powered off for the period of 2 years and 2 months that she operates it.
It was getting somewhat hot and even though she was advised to power off the device when not used, she had it on 365/24/7.
So, after this time, she left for vacation and removed it (!) from power. After getting back she asked me to connect it again as she did not remember how to do it.
When i tried to, only the power led lit, the signal led was not lighting as it should. I tried to get in the menu, but failed.
After trying several things and since it was off warranty, i decided to open it to see what had failed inside.
(Click on the images to show bigger version)
The photo below shows the internals ( notice that there are 5 caps and 2 coils removed , in order to have access to clean the pcb) :
And here some of the components removed ( notice the brown substance on one of the caps ) :
I tried to clead the remaining brown stain on the PCB with IPA, but i had no success.
The caps top sides show no distortion, the bottom sides also show no distortion, so is the brown substance leak from the caps ,
or is it a discolored glue-like substance, the one that manufacturers use to stop components from oscillating and making noise ?
Any feedback would be appreciated.
Thank you in advance!
Cheers!
Since this category also states Video Sources, i thought this is the correct place to post. If not, please inform me to remove.
A little intro :
Since the transition from Analog to DVB-T signal in Greece happened somewhat late (2-3 years ago) , lots of people i know asked me what set-top box to get to receive the new DVB-T channels.
Crystal Audio is a Greek Company that designs and manufactures electronics from Home Cinema Speakers to DVB-T Tuners and from Media Players to Wireless A/V transmitters.
So , i chose to promote "our own" company instead getting some foreign design. I got almost 9-10 devices for me and people i know, all of them worked flawlessly till a month ago, afaik.
The only one that stopped working is the one that my aunt had. It has never powered off for the period of 2 years and 2 months that she operates it.
It was getting somewhat hot and even though she was advised to power off the device when not used, she had it on 365/24/7.
So, after this time, she left for vacation and removed it (!) from power. After getting back she asked me to connect it again as she did not remember how to do it.
When i tried to, only the power led lit, the signal led was not lighting as it should. I tried to get in the menu, but failed.
After trying several things and since it was off warranty, i decided to open it to see what had failed inside.
(Click on the images to show bigger version)
The photo below shows the internals ( notice that there are 5 caps and 2 coils removed , in order to have access to clean the pcb) :
And here some of the components removed ( notice the brown substance on one of the caps ) :
I tried to clead the remaining brown stain on the PCB with IPA, but i had no success.
The caps top sides show no distortion, the bottom sides also show no distortion, so is the brown substance leak from the caps ,
or is it a discolored glue-like substance, the one that manufacturers use to stop components from oscillating and making noise ?
Any feedback would be appreciated.
Thank you in advance!
Cheers!
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