Stewart World 2.1 - Dead Channel!

[agedhorse]

yup!
i'm not sure where i got the idea that my Stewart 1.2 was Class H with SMPS. their website states the amp is A/B w/high frequency SMPS. perhaps this explains my preferences.
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Have you considered it may not have anything to do with the class of the amp?

 

[Lonnybass]

Unfortunately - no luck with help from Stewart, simply because they don't work on them anymore. They are willing to email me a schematic of the 2.1, but that's gonna be the end of the road.

 

[pacojas]

Unfortunately - no luck with help from Stewart, simply because they don't work on them anymore. They are willing to email me a schematic of the 2.1, but that's gonna be the end of the road.

well at least they're fairly cheap on the used market!

 

[hodgy]

I just fixed one of these in my shop a couple of weeks ago. But since you're not in the Seattle area I'm of no help.

 

[Mgc2877]

I just fixed one of these in my shop a couple of weeks ago. But since you're not in the Seattle area I'm of no help.

Hey hodgy,
what was the fix? if you remember. My channel 1 just died on my 2.1 last night. just looking for an idea for what might be wrong.

 

[hodgy]

If I recall correctly, I just had to replace the MOSFETs, and I think there were a couple of resistors that were taken out as well. This is actually pretty lucky. Sometimes when the MOSFETS go, there can be a lot of collateral damage.