Help me identify this Surface mount component

[jives11]

Hi,

I posted this here in the hope that someone more familiar with surface mount components will be able to help. There is an active thread going in the digital section on the use of the Sony playstation One as a cheap and good sounding CD player. We are trying to understand the Audio circuit for tweaking purposes. Unfortunately we do not have a circuit diagram.

In this post you can see a strange dark gray rectangle with no legs but 6 solder points. It is marked red at each end, which I hope means something in the world of SMT

There is a picture and query here :
http://www.diyaudio.com/forums/showt...238#post784238

A picture is here :
http://www.diyaudio.com/forums/attac...amp=1133994125

It does not look like a transistor , resistor, cap or opamp. The signal appears to pass through it i.e it's not open like a coupling cap. It measures no resistance on my admitidly poor Radio Shack analog meter. Both signals (R & L) appear to pass through this before emerging at the RCA outputs.

Any help would be much appreciated

[Mick_F]

Could it be something like a SMD ferrite bead??????

[dhaen]

Probably a filter.
example
Manufacturers have to be careful nowdays to conform to EMC regulations.

The answer to the next question is: Not one iota IMO.

[peranders]

Probably it's a feedthrough capacitor with ferrite (=filter) like many different products from Murata.

[jives11]

Originally posted by dhaen

The answer to the next question is: Not one iota IMO. [/B]

Thanks - but what was the question

[dhaen]

Originally posted by jives11



Thanks - but what was the question

The usual follow up is: Will it sound any better if I remove / bypass it?

[I_Forgot]

Originally posted by dhaen

The usual follow up is: Will it sound any better if I remove / bypass it?

The question BEFORE that follow-up should be "what is its purpose?"

Who knows, maybe electronics manufacturers pepper their PCBs with unnecessary stuff just to confuse amateurs and to prevent their competitors from copying their product.

I_F