Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | TAF555ES | TRANSISTOR SUBSTITUTIONS | Power amplifier uses many 2SC1815-Y transistors in the firststages. Parts list subs them with 2SC1364. I believe this is incorrect,since for instance Q309 and Q310 would need a Vceo greater than 60V. Myspec list shows a typical Vceo for a 2SC1364 of 5 | ||
Sony | TAF55 | SHORTED D406 | The 15V line was down on this unit. We found D406 shorted(located in regulator circuit). | ||
Sony | TAF55 | ALL LAMPS OPEN IF ONE OPENS | All lamps are open. Apparently when one of the lamps failsthe others also go when a peak is received. |