- Joined
- May 14, 2014
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- 2,290
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- Southwest Kootenays BC
- Tagline
- No such things as bad days, just bad moments
I micky moused some fuses to see what the amp did on a DBT and no surprize, the bulb stayed bright. A rebuild thread on that other forum mentioned the bridge rectifier Sony used was prone to failure so I pulled it, checked it and it was OK. As were it's capacitors. Next up, the output transitors.
Two of those had failed as did some others on the power amp board. I pulled and checked all of them.
Summerizing my thumbs up or thumbs down opinion request:
Output transistors - MJE15032 (with center collector leg removed) sub for 2SC1061 / 2SC1060.
Ouptput transitors - MJE15033 (with center collector leg removed) sub for 2SB856 / 2SA670.
KSA1220 sub for 2SA706
KSC2690 sub for 2SC1364 / 2SC633A - heatsink temperature bias adjust.
Not asking for much am I?
Two of those had failed as did some others on the power amp board. I pulled and checked all of them.
Summerizing my thumbs up or thumbs down opinion request:
Output transistors - MJE15032 (with center collector leg removed) sub for 2SC1061 / 2SC1060.
Ouptput transitors - MJE15033 (with center collector leg removed) sub for 2SB856 / 2SA670.
KSA1220 sub for 2SA706
KSC2690 sub for 2SC1364 / 2SC633A - heatsink temperature bias adjust.
Not asking for much am I?
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