Recomend replacement for 2SA1492 & 2SA3856 pair ?

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Jared

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Joined 2002
#1
I have a Hitachi receiver 1 with a blown channel. the transistors are one 2SA1492 & 2SA3856 per channel. The other smaller heatsinked transistors are 2SA957 & 2SC2167 one each per channel. I cannot find the outputs transistors anywhere.. Can anyone recommend a suitable drop in replacement for them? Will that require I change the smaller transistors as well? I think the smaller ones may be blown on the blown channel as well but dunno for sure.. I accidentally friend my multimeter with a microwave transformer and a poorly thought out voltage divider so I cant check em yet..
 
#2
Hi, Jared

Make sure you replace the drivers also. Preferably with originals.
As replacements for the 2SA1492 you could try the 2SA1986 or the 2SA1294 and complements.
The driver transistors 2SA957 could be replaced by the 2SA1079 or the 2SA1133 and complements.
Measure the bias transistor as well. (if any)
/Hugo - fried his nice Fluke one day on the HT of an old TV. :bawling:
 
#9
haha thats funny, this was a fluke meter too.. was IBM standard issue back when my father was a tech... Looking around for a replacement I realized pretty quickly I was not going to get somehting as nice as I had without spending a lot more money than I want on a DMM.
 
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