dleblanc@joplin.mpr.ca (David LeBlanc) (01/09/90)
I hope someone out there in net.land can help me. My SONY integrated amp just popped a power transistor. The official SONY replacement part is a power NPN (2SC1986) which they want $12 for. The only data book in which I can find an equivalent part is the Motorola power bipolar book which states that the TIP-41C is the "Motorola Similar Replacement" (as opposed to the "Motorola Direct Replacement") which sells at a local store for about $1.50. So far so good. The question I have is 'How similar will the Motorola part be ?' Do output stages of integrated amplifiers tend to rely critically on the performance specs of the transistors ? I do not have a schematic of the circuit but do know that there are not many pot's in the vicinity of the transistor - this tells me that the circuit is not terribly sensitive to the transistor's beta (right?). Any ideas/comments gratefully accepted. Notes : Amp is the TA-F3A (approx. 50 W/channel - I think) - NOT what you call an audiophile's favorite. Dave LeBlanc dleblanc@joplin.mpr.ca (604) 293-6061