H i have an old Roland jazz chorus-55 to repair and need help with a few things.
1. the reverb pot is missing and don't know what value to replace it with
2. i cant find new output transistors (2sd1408 and 2sb1017) any ideas where i can get them or an equivalent
1. the reverb pot is missing and don't know what value to replace it with
2. i cant find new output transistors (2sd1408 and 2sb1017) any ideas where i can get them or an equivalent
IF there are any other pots, check those.. they are probably similar values. I doubt the pot is critical - try a few values. 100K is probably a good start.
For the output transistors, well you could use MJE15034/5 or similar. They are faster so watch out for stability issues, but otherwise they should work well.
For the output transistors, well you could use MJE15034/5 or similar. They are faster so watch out for stability issues, but otherwise they should work well.
Or thesee
http://www.alldatasheet.com/datasheet-pdf/pdf/2572/MOSPEC/2SD526.html
http://www.datasheetcatalog.com/datasheets_pdf/2/S/B/5/2SB596.shtml
I can get these in New zealand easily
http://www.alldatasheet.com/datasheet-pdf/pdf/2572/MOSPEC/2SD526.html
http://www.datasheetcatalog.com/datasheets_pdf/2/S/B/5/2SB596.shtml
I can get these in New zealand easily
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