Linehand
Active Member
Just extended the legs a bit, reused the insulators, will mount it similar to stock when its all done
Sansui 9090db green protector light, no output
- Thread starter Linehand
- Start date
Just extended the legs a bit, reused the insulators, will mount it similar to stock when its all done
Hipocrates
Super Member
Good work that transistor, ... I still don't know well, what sub will do the trick, but just in case you can find them here.
http://www.sansui-vintage.com/index.php (no affiliation)
Linehand
Active Member
kevzep
Its all about the Music
Any general purpose transistor can be subbed here, doesn't have to be very high HFE or FT...
Ive even used KSC1845 in the Au999 before, they work just fine....some people get all "must be original or it wont work properly" about it, but I have not found that at all...
Linehand
Active Member
I could use a few more KSC1845's they seem to work in several places...
I have KSA1142 and KSA1013 but I'm not sure why, I must have come across them in some sub thread
Hipocrates
Super Member
Really? Damn that was easy. Thanks!
Linehand
Active Member
Does anyone know if these voltages are correct for 9090db? They are different than what is listed in the manual @ hifi engine
Hipocrates
Super Member
HIFi engine esquematic has 100V AC, maybe that will explain it, otherwise I have no idea.
Linehand
Active Member
Internal voltages should all remain the same regardless I would think
Hipocrates
Super Member
No JDM here, so I have no clue.
Hipocrates
Super Member
The mystery is then why the different voltages between JDM and multi voltage unit schematics.
kevzep
Its all about the Music
Oh okay, I have obviously missed something here, I would have thought all the secondary voltages would be the same...The mystery is then why the different voltages between JDM and multi voltage unit schematics.
Hipocrates
Super Member
Just as some kind of curiousity... I have them both here as jpg.
https://imgur.com/a/Ot1GcEp
https://imgur.com/a/Ot1GcEp
Linehand
Active Member
Hipocrates
Super Member
anyway.... how the prject going?
Linehand
Active Member
Linehand
Active Member
Linehand
Active Member
Gettin there...
Sounds good on some $78 polks from best buy. Running tidal masters off a macbook...
Still some tone control issues, the signal intermittent fall out then toggle switches/pots and comes back.
I’m tracking VR04 (bias trim pot) on F2624. Pinout voltages are -500mV, 397mV, and 397mV. VR04 (which bias’ perfectly) shows -575mV, 410mV, and 583mV.
Why the balaced legs on (VR04) the side that wont bias past 7mA?
EDIT: those legs are balanced on both pots my measuring was wrong...
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Hipocrates
Super Member
Very nice!
