PS3 connecting to Logitech X340 speakers

[Ybbon]

Bit specific I know but I have a PS3, Logitech X340 speakers and a Samsung LED TV.

I want to hook the speakers through the TV and I've got a video adapter from logitech to do that. This takes orange/black/green cables from the speakers to standard red/white audio cables.

The problem is no sound when the TV is set to external speakers. The TV though has lots of fancy connectors but not red/white audio, that uses a single yellow connector with the red/white/yellow AV cable. Well I'm not using yellow so hoped the red/white would work anyway but seems not to.

I don't know if the cable is bad (got another r/w only to try) or the switch to single AV connection screws the speakers up again.

I do have another, older Samsung LCD TV which does have single audio inputs so I'll try that after trying the red/white cable, just wondered if anyone has a similar setup/problem?

[Top-Tier-Tech]

A picture of your TV's outputs or the model number would help me help you. The single yellow plug is typically video not audio.

[Ybbon]

yeah that would help! It is one of these: http://www.amazon.co.uk/Samsung-UE22.../ref=de_a_smtd

So the single yellow is the composite in, it came with a connector that you can plug your composite cable into, I thought (i fact I could have sworn I've done it before) that you can just use the audio L-R (ie the red/white jacks) and not the yellow. It also has a component in (Y/Pb/Pr).

However, I just found a spec on which and looks like it doesn't do stereo output so I rather suspect the speakers and TV are not ideally suited. I probably need to trade the speakers in for a new set which will connect properly. They're just too big for my living room where the PC is which is why I wanted them on the SPS3 but maybe not to be.

[UPDATE]
OK I think I know why it doesn't work on either TV, because they are connecting to the PS3 via HDMI. I tried the second TV (not sure the model, it does have separate RCA outs but still didn't work). I think I have 2 options, get an Optical audio to analog audio converter (about £40 it looks like on amazon), or ebay the X540's - the sound from the TV isn't bad anyway, or I could buy another set but as I said the sound isn't terrible as is.