Sound goes after changing channel, doesn't come back (1 Viewer)

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TV-Server Version: 1.0 RC3
MediaPortal Version: 1.0 RC3
MediaPortal Skin: blue wide and blue normal
Windows Version: xp sp3 (x2)
CPU Type: AMD Athlon 4200 (on tv server)
HDD: 4 X 250 gb maxtor Sata 1s in 10 RAID + dedicated 7200 sataII drive for time shift + 80gb SataII for OS
Memory: 2gb DDR400
Motherboard: Gigabyte
Video Card: TV server has 7200GS, HTPC has onboard (DX9 compatible), Pornulator has HD4870X2 with 2gb ddr5 on board
Video Card Driver: all up to date, from nvidia site. (apart from ATI card obviously)
Sound Card: onboard (AC97) on all pc's
Sound Card AC3: opticcal SPDIF out on HTPC, standard stereo on pornulator
Sound Card Driver: latest
1. TV Card: Leadtek WinFast DTV1000 T in tv server
1. TV Card Type: DVB-T
1. TV Card Driver: latest
2. TV Card: + Compro DVB-T300 in tv server
2. TV Card Type: DVB-T hybrid
2. TV Card Driver: latest
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: not sure, tried a few
MPEG2 Audio Codec: not sure
h.264 Video Codec: not sure
Satelite/CableTV Provider: none
HTPC Case: MSI Mega 180
TV server case

Cooling: fan
Power Supply: 500w, not sure and 800W (Tv Server, MSI MEga 180 HTPC, Pornulator
Remote: MS MCER
TV: plasma connect via VGA running at 1024 768
TV - HTPC Connection: RGB (VGA-15 pin d sub)


I haven't had much luck getting help with this thread
https://forum.team-mediaportal.com/...fails-46831/?highlight=sound+changing+channel
So i figured i would break the problem down into little bits and work on each bit seperatly.

When i turn the TV on, selecting ABC2 i get sound.
when i select certain other channels (abc, ten) the sound goes off.
When i turn back to ABC2 the sound does not come back
If i turn the "tv off" (not restarting the tv server, or service) and back on again the sound works for abc2
if i turn the tv on straight to abc or ten, i get no sound.

At all time sound works in mp, i can hear the clicks as i navigate the menus.

these are the logs created on tvserver (MrWatchey) of me turning on the tv to abc2, changing the channel to abc, changing back to abc2 then turning the tv off.
No error logs are created.

 

[magnets]

fixed

alright, i've fixed this myself.
The problem was on both clients.
I uninstalled ALL codecs and codec related software
i restarted
I installed the K-Lite Mega codec pack
I restarted
I went into mp config on the client (in advanced mode)
I set the preffered codec to ffdshow where available
I unticked Prefer AC3

that was it.

So it was either a codec issue, the ac3 preference or both.

ooops i realised i also installed the klite pack on the tv server.