info
Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Nakamichi TA2, tuner amp of 1988
34 views
Skip to first unread message
N_Cook
Oct 22, 2017, 4:59:29 AM10/22/17
to
Tuner works but nothing on any input function speakers or phones. Cold
testing what is accessible of the amp seems ok.
I suspect uPC1237 protect area, probably drift causing false protect,
but not removed the top board to probe that area yet.
Good SM is out there.
Any known drift component in those amps over 30 years?
Plenty of yellow peril, now dark brown, milk-glue but tuner working ,
where marginal conductivity would show up.
testing what is accessible of the amp seems ok.
I suspect uPC1237 protect area, probably drift causing false protect,
but not removed the top board to probe that area yet.
Good SM is out there.
Any known drift component in those amps over 30 years?
Plenty of yellow peril, now dark brown, milk-glue but tuner working ,
where marginal conductivity would show up.
Chuck
Oct 30, 2017, 3:03:13 PM10/30/17
to
this problem. It should have high ESR. Haven't repaired one in the
last 18 years so I can't give you the cap no..
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
0 new messages