Have one of these babies and I have upgraded it once in the mid 90's. Now I have DC on the left channel about 78 mV. Is this acceptable or should it be fixed?
up to 100mV is considered as acceptable
however - try to decrease it , finding what's causing it
edit ........ typed around 06.00 , clicked send right now ...... and Pa is faster , again
however - try to decrease it , finding what's causing it
edit ........ typed around 06.00 , clicked send right now ...... and Pa is faster , again
Today my Stasis 3 amp started with letting med down.
The right channel now just deliver distorted sound and is useless.
Does anyone have any recomendation to what I can to to get it back in business? And is there a recomended set of components that should be upgraded replaced so it can continue to serve me in years to come?
Or is it ready for the trashcan? I really would like to get it fixed.
The right channel now just deliver distorted sound and is useless.
Does anyone have any recomendation to what I can to to get it back in business? And is there a recomended set of components that should be upgraded replaced so it can continue to serve me in years to come?
Or is it ready for the trashcan? I really would like to get it fixed.
no trashcan
also - no advice without any measurements made by you , according to posted schematic
also - no advice without any measurements made by you , according to posted schematic
This is rather embarrasing, but it was actually the speaker that had partly died... so the amp is still going. But do you have any suggestions about sensible upgrades that will keep it going for the years to come?
not much except re-cap and checking condition of thermal grease under output biggies;
I'm always checking are biggies still tightly screwed to htsnks ...... well , when they aren't totally screwed
not that's probably issue in Treshold amp ....... and not that's easy to check in one
hm... maybe best solution for that sissy amp is - just ship it to OPLDF
I'm always checking are biggies still tightly screwed to htsnks ...... well , when they aren't totally screwed
not that's probably issue in Treshold amp ....... and not that's easy to check in one
hm... maybe best solution for that sissy amp is - just ship it to OPLDF
Thank you for answer 🙂
Shipping it from Norway through half of Europe would cost a fortune I assume... ;-)
One last question. I have the amp on service now. What is the recomended BIAS values? My repair man said that the BIAS on the left channel was about zero, and he thought it also was low on the right channel.
Shipping it from Norway through half of Europe would cost a fortune I assume... ;-)
One last question. I have the amp on service now. What is the recomended BIAS values? My repair man said that the BIAS on the left channel was about zero, and he thought it also was low on the right channel.
plenty of info in related threads (including http://www.diyaudio.com/forums/pass-labs/198589-papas-pubs.html?highlight=papa's )
from memory - setting it iteratively - up to 45-50C at inner upper corner of heatsink is sorta general rule
from memory - setting it iteratively - up to 45-50C at inner upper corner of heatsink is sorta general rule
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