Music Module with no sound

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Por Varaktori

Resident (60)

imagem de Varaktori

21-12-2013, 11:54

Have you check solder side of that board?

Por NYYRIKKI

Enlighted (5918)

imagem de NYYRIKKI

21-12-2013, 11:56

If you manage to find a working solution, please share the result. I have one Music Module with identical problem... I accidentally bumped in to it when it was connected to slot expander and after that it has been like this. (The "low, low, low, low, sound" also cuts off pretty badly)

Por TheWhipMaster

Expert (120)

imagem de TheWhipMaster

21-12-2013, 14:47

I guess the next Check is the amp side and if some condensater seem to be cracked

Por selios2000

Hero (526)

imagem de selios2000

22-12-2013, 13:52

The problem is that I don't understand electronics so I'm completely lost. The guy on ebay told me that he checked it before and has sound. If it is true, something might have happened durind transport... How sad

Por Eugeny_Brychkov

Paragon (1195)

imagem de Eugeny_Brychkov

24-12-2013, 21:24

Is circuit diagram available for this device?
Edit: found it at http://msx.hansotten.com/uploads/msxdocs/philipsnms12051160s...

Edit2: anyone is ready to troubleshoot the issue using skype?

Por selios2000

Hero (526)

imagem de selios2000

25-12-2013, 11:39

Hello I have bad internet connection so Skype do not work. What are you trying to do? I really appreciate all the effort...

Por Eugeny_Brychkov

Paragon (1195)

imagem de Eugeny_Brychkov

28-12-2013, 00:44

selios2000 wrote:

Hello I have bad internet connection so Skype do not work.

Should you have enough bandwidth for skype text chat if you write to the forum? Shocked!

selios2000 wrote:

What are you trying to do? I really appreciate all the effort...

We should check your board to see what's wrong. With skype text chat it is faster and more effective.

Por KdL

Paragon (1434)

imagem de KdL

28-12-2013, 05:48

Por KdL

Paragon (1434)

imagem de KdL

28-12-2013, 06:24

http://www.msx.org/wiki/MSX-AUDIO
[..]
On the Philips NMS-1205 Music Module replace R41 with a 27K resistor to increase the output volume to the same level as an FM-PAC. This comes in handy when playing Moonblaster stereo songs.
[..]

Additional note:
also a trimmer by 10K on R39 could balance the internal volume.
You can check the mixer scheme at page 9 of Service Manual.

Por KdL

Paragon (1434)

imagem de KdL

28-12-2013, 08:17

WARNING!! The PMMDIAGS V3.87 has a bug on BUSDIR_n test at line 2220.

PMMDIAGS V3.88 (fixed by me)

[..]

30 REM Philips music module diagnostics 3.88 (fixed by KdL 2013.12.28)
[..]

2220 O=INP(&HC0):IF INKEY$=""THEN2220
[..]
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