Help. Atari 2600jr black edition with mod no sound

[torngracedrummer]

Hi,

I'm new to Atari 2600 gaming but have to say I love it. I managed to get hold of a rainbow 2600jr a year ago and AV modded it successfully and it's fantastic fun. 

 

A few weeks ago a friend gave me an all black 2600jr that he didn't want and I thought it looked awesome so I thought I'd add it to the collection and mod this one. I found out that this one is pretty rare and that made me want it even more. However, I've run in to a snag.

 

I've modded this one exactly as I did the other one and everything is perfect apart from the sound. There is none!! There's a tiny bit of statistic but nothing else. I've re-flowed every solder joint on the board and nothing still. The board itself is in really good condition and I can't see any corrosion at all or leaked capacitor's. This is a revision 2 board and I'm desperate to get this working. I want this to take pride of place in my collection.

Please can anyone help, I'm at a bit of a loss. I'll send as many pics as possible. Thanks in advance.

 

Also, I have heard that sometimes the bottom right capacitors (if they are capacitors) might need changing but I can't find there value. Is this correct??

 

[torngracedrummer]

Also, should I remove the RF module?? Some have said that. Also some have said to replace the bottom right capacitors but I can't figure out there value. 

 

 

This is the video I watched for the mod.