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Repairing a set top box.
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moo
Sep 5, 2012, 3:06:54 AM9/5/12
to
Hi all, new to this forum an electronic device repair. I have been given
a few items that are faulty to learn repair on and I currently am
working on a set top box the picture comes up fine but when I go to scan
the channels the signal strength is exactly 0 nothing at all, I have
tested various points on the board for voltage with a fluke and it all
checks out, the cables are fine. And im assuming the rf modulator box is
as well because im getting the display on screen when I plug the RF
cable in from the wall. Just no signal strength. I at a bit of a loss as
to where to start looking and cant find a service manual online to give
me any clues. the board is marked as DVB-TH MB04 rev 1.2. Some jaycar
product bought a few years ago. If someone could please point me in the
right direction it would be very much appreciated.
Thanks for your time.
a few items that are faulty to learn repair on and I currently am
working on a set top box the picture comes up fine but when I go to scan
the channels the signal strength is exactly 0 nothing at all, I have
tested various points on the board for voltage with a fluke and it all
checks out, the cables are fine. And im assuming the rf modulator box is
as well because im getting the display on screen when I plug the RF
cable in from the wall. Just no signal strength. I at a bit of a loss as
to where to start looking and cant find a service manual online to give
me any clues. the board is marked as DVB-TH MB04 rev 1.2. Some jaycar
product bought a few years ago. If someone could please point me in the
right direction it would be very much appreciated.
Thanks for your time.
moo
Sep 5, 2012, 3:11:36 AM9/5/12
to
N_Cook
Sep 5, 2012, 4:19:51 AM9/5/12
to
moo <m...@nospam.net> wrote in message
news:5046fa0c$0$14486$c3e...@news.astraweb.com...
First you have to check whether it has fallen foul of not enough EEprom for
the current useage,
"Split NIT "
news:5046fa0c$0$14486$c3e...@news.astraweb.com...
the current useage,
"Split NIT "
moo
Sep 5, 2012, 5:01:06 AM9/5/12
to N_Cook
suggestion. If it is the case is it a matter of rewriting the eeprom, or
essentially does the change in freeview spec make this a paperweight?
moo
Sep 5, 2012, 5:03:11 AM9/5/12
to
On 05/09/12 18:19, N_Cook wrote:
Thanks :) I just done a bit of googling about so Im onto this Split NIC
suggestion. If it is the case is it a matter of rewriting the eeprom, or
does the change in freeview spec essentially make this a paperweight?
suggestion. If it is the case is it a matter of rewriting the eeprom, or
Adrian C
Sep 10, 2012, 2:32:55 PM9/10/12
to
On 05/09/2012 10:03, moo wrote:
>
> Thanks :) I just done a bit of googling about so Im onto this Split NIC
> suggestion. If it is the case is it a matter of rewriting the eeprom, or
> does the change in freeview spec essentially make this a paperweight?
I think 'Spilt NIT' is a UK issue.
>
> Thanks :) I just done a bit of googling about so Im onto this Split NIC
> suggestion. If it is the case is it a matter of rewriting the eeprom, or
> does the change in freeview spec essentially make this a paperweight?
Are you in Australia?
--
Adrian C
moo
Sep 12, 2012, 10:06:12 PM9/12/12
to
issue but cant find much about Australia.... noticed the tuners are
quiet loose so im going to take a shot a replacing them and go from
there.... Thanks for your input.
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