Hi,
I need to repair my mates Otari mtr-90 mkII. (It used to be in our studio)
The supply reel is stuck in Rewind at switch on.
Think it's blown a drive transistor or two..
MDA schematic below is for a MKIII but assuming it's similar to the MKII.
The part's no longer made, so i was wondering if there's an alternate?
The old parts are Toshiba 2SD552 [NPN] and 2SB552 [PNP]
http://www.svntc.com/TPDF/1604.pdf
Possibly this Motorola part may do it, need to study the datasheet in more detail..
http://www.farnell.com/datasheets/313519.pdf
Also where is the MDA board located on the MTR 90, is it round the back by the fans like an Ampex MM1200?
I can't see it in the service manual.
thanks.
I need to repair my mates Otari mtr-90 mkII. (It used to be in our studio)
The supply reel is stuck in Rewind at switch on.
Think it's blown a drive transistor or two..
MDA schematic below is for a MKIII but assuming it's similar to the MKII.
The part's no longer made, so i was wondering if there's an alternate?
The old parts are Toshiba 2SD552 [NPN] and 2SB552 [PNP]
http://www.svntc.com/TPDF/1604.pdf
Possibly this Motorola part may do it, need to study the datasheet in more detail..
http://www.farnell.com/datasheets/313519.pdf
Also where is the MDA board located on the MTR 90, is it round the back by the fans like an Ampex MM1200?
I can't see it in the service manual.
thanks.