Blown mje350 and led [REPAIR VID AT END] [resolved]

[Paul Birkeland]

You want the 5731A on the A side where it's exposed to more voltage and cooks off a little more heat (in the Paramount).  In the Foreplay, the center board just gets a little warmer than the outer boards and the 5731A will more gracefully handle the load in that position.

[Rob Capizzi]

how about the B side? I've installed the MJE5731a. On the B side. Can I put mje5731AG on both A and B?

[Paul Birkeland]

You can do that in the Paramount.  I personally don't find it worth the risk of damaging a PC board that we don't produce anymore to do this, but it's certainly an option.

[Rob Capizzi]

So then I'll leave alone side A in paramount, but upgrade side B in foreplay center board?

[Paul Birkeland]

Yes, you are correct.  For whatever reason, I remembered the higher current/voltage side of the Paramount C4S being the A side (a convention which we did adopt at some point), but it appears that the B side is where you want the 5731As.  Such things happen on a product that hasn't been around in a while!

[Rob Capizzi]

Thank you