Yamaha SPX90 PSU schematic?
- Thread starter boodthee
- Start date
Help Support GroupDIY Audio Forum:
Tekay
Well-known member
I have the SPX90 on the way right now, pm me your e-mail and I send it over! Think it's the same as the 90II.
Check the electrolytics and the effect resistors!
I have two broken here too so reading your post was a kick in the ass for me to start repairing them :wink:
Check the electrolytics and the effect resistors!
I have two broken here too so reading your post was a kick in the ass for me to start repairing them :wink:
Tekay
Well-known member
Just checked one of mine! It was only a bad soldered switch regulator!
90% of the SPX90 psu's I've repair'd suffer'd from bad electrolytics on the low-voltage side. This because it runs much hotter than the 85-degree lytics like.
Try exchanging all the low-voltahe electrolytics to low-esr 105-degrees types - most of the time this will fix it..
Jakob E.
Try exchanging all the low-voltahe electrolytics to low-esr 105-degrees types - most of the time this will fix it..
Jakob E.
