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Resistance values are never dead on, after all, resistors typically have a tolerance of 5%; so if you are aiming for 370, you are doing good if you hit between 351 and 389 (5% either direction). Typically, though, you'll do much better than 5%.

As for testing a transistor, there's some good ...

I must've fried something on the board itself, not the mod. Cause I bought a 'new' atari on ebay, rewired the mod to it, and all is working now.... Fortunately for me the atari I bought was effectively the same model, so didn't even need to drill holes in the case to mount the output jacks, just ...

Greetings,

So, I tossed the chroma wire to the base of the transistor, as directed in the last comment, but that didn't fix the issue.

So, I poked the wire to the emitter and the collector, and again, no results. Then, I noticed that if I short out the collector and base of the transisor with the ...

Also, I did try hooking that wire back up to the R210 spot, and that didn't help...

Greetings,

I had composite output working on just about any TV I could get my hands on by using the following mod:

http://benheck.com/book/support/Atari2600VidMod.htm

So, when trying to put everything back into the atari case, I decided to follow the recommendation of doing what you can to ...

Yep, that mod works on my Mitsubishi WS-55511. Now to remove the traces between the RF unit and the rest of the board... I think that unsoldering it in a few places is likely the easiest and safest method.

Greetings,

I have done the Ben Heck composite mod, the one available here:

http://www.classicgaming.com/vcsp/Question2.htm

audio and video work great on my cheap TV/VCR combo unit, but I cannot get it to display on my big screen TV. I have played with the POTs on the mod, and it still won't work ...