Audio Distortion 500c

[buckles]

This is driving me nuts.

I have a 500c, DW image, all channels clear fine

the audio through the scart is distorted and buzzy. If you turn it down you can't really hear it, but at 1/2 volume it's very apparent (to me anyway)

Tried it on various tvs. Is it a known issue?

I found this post from someone with the same symptoms:

http://www.digital-kaos.co.uk/forums/f34/audio-issues-dreambox-500-c-1913/

I can't really see how fast zapping could impact it. It doesn't change anything for me.

Any ideas? Any help appreciated,

Buckles

[FixerUpper]

DM500c Clone Audio Distortion Fix

Hello buckles, unfortunately you do not state how old your box is but a year or so ago there was a batch of clones from China that had this error and I was sent the attached picture that showed the components to remove in order to cure it.

I hope this is the same problem that yours is suffering from, but just in case try to keep the parts for refitting if it does not solve the audio distortion.

FixerUpper.

[buckles]

Re: Audio Distortion 500c

Thanks for the tip. I'll give it a go.

I don't know how old my box is.

If these resistors can be removed and fix this problem. Why were they ever included?

Cheers,

Buckles

[clit-eastwood]

Thanks for the tip. I'll give it a go.

I don't know how old my box is.

If these resistors can be removed and fix this problem. Why were they ever included?

Cheers,

Buckles

Any resistor can be removed....as long as you have a soldering iron.

Have you tried a better quality scart lead? I had a similar problem, bought a new, scart lead, and the problem was still there... then I found another old scart lead lying around and noticed the lead was thicker, i tried it and it cured the problem...And the thicker scart lead was just a cheapie

[buckles]

I'll give a decent scart lead a go.

I've ordered one of these for about ?17:

QED Performance SCART

I've done a bit of reading on the 2 additional resistors that were included in some clones. I'm not sure the symptoms match. I'll open my box and check if they're there though.

[clit-eastwood]

I'll give a decent scart lead a go.

I've ordered one of these for about ?17:

QED Performance SCART

I've done a bit of reading on the 2 additional resistors that were included in some clones. I'm not sure the symptoms match. I'll open my box and check if they're there though.

Just make sure it aint one of those HEAVY, stiff, thick ones with a sort of braiding on the outside, the reason i say this is i have known lots of people having problems with the connections coming loose because of the sheer weight. As i said earlier, i am using a fairly basic cheap one, but the lead is a bit thicker than the ones i had probs with, so before you spend money, see if someone can lend you one, (thicker lead) and if it dont work, investigate further. Good luck

[buckles]

2 Extra Capacitors

FixerUpper,

You are right, my box has those 2 capacitors shown your attached picture.

Before I remove them, does anyone have a picture of what the main board should look like?

Do i need to replace them with something, bridge the connections or just leave them blank?

I'd like to be sure of what i'm doing before i start poking around

Cheers,

[FixerUpper]

Hello again buckles, I have just whipped the top of my test 500c and taken a couple more pics for you, one at closer range than the other and with the two components marked in red.

The two components only need to be removed...not replaced with anything or their contacts shorted...just removed. As I stated in my first post be careful and try to keep them intact in case it makes matters worse than it is now and you need to replace them You never know.

Best of luck, FixerUpper.

[Integrale Man]

FixerUpper,

You are right, my box has those 2 capacitors shown your attached picture.

Before I remove them, does anyone have a picture of what the main board should look like?

Do i need to replace them with something, bridge the connections or just leave them blank?

I'd like to be sure of what i'm doing before i start poking around

Cheers,

Certainly don't short the contacts as the capacitors are for smoothing AC noise therefore if you short them you're likely to short out the positive to the negative line.

[buckles]

if these capacitors are smoothing the AC to give a more constant voltage. why does removing them potentially fix a hardware audio problem?

[drawflex]

because an audio waveform is really just an AC voltage

[mistermisfit]

I had the same audio issues and used the Toslink cable (optical out) described in the other thread and the audio is fab now.

[kawwa3]

does it work for 500s ? anyone ?

[mistermisfit]

does it work for 500s ? anyone ?

Probably.. the toslink uses a different circuit to the analogue audio outputs.