Charles? Sony KV-1722

[Findm-Keepm]

KV-1722 schematics are found in ETD's TEKFAX 113 - available free at World RadioHistory.com:

https://www.worldradiohistory.com/Ar...n-113-1976.pdf

Everybody here should have the paper or digital form of TEKFAX ! They are direct copies of manufacturer schematics, with limited parts info, sorta like the old Beitman books.

FYI, NTE parts direct has NTE276's on clearance, cheap, about 6 bucks each. The NTE 276 is NTE's replacement for the SG-613 and SG-613A SCS used in the KV-1722.

[JohnCT]

Originally Posted by Findm-Keepm

FYI, NTE parts direct has NTE276's on clearance, cheap, about 6 bucks each. The NTE 276 is NTE's replacement for the SG-613 and SG-613A SCS used in the KV-1722.

I don't know the provenance of the NTEs, but back when these were new, any attempt to use SK, ECG (now NTE), HEP (Motorola), etc. would cause immediate failure on power up.

The only option then was to use Sony parts and nothing else.

If these NTEs are simply rebagged Sony parts, they'll be fine, but if they're not, I would be reluctant to try them.

John