Hi again.
Guess there's no copies of the schematic available.
No probs, I've got by without, but what is now needed is a replacement output transformer, anybody got one?
Also the output valves are interesting (50CA10) as they claim to be triodes, but are in fact beam tetrodes, internally reconnected as triodes.
Guess there's no copies of the schematic available.
No probs, I've got by without, but what is now needed is a replacement output transformer, anybody got one?
Also the output valves are interesting (50CA10) as they claim to be triodes, but are in fact beam tetrodes, internally reconnected as triodes.
Sorry, I don't know if Luxman (which is now Alpine) can supply replacement parts for EOL products.
Once I wished to order replacement output transformers for Sansui AU-111 (made now by Hashimoto), price was 500 EURO/pc + VAT.
A look at the data sheet shows low RP, low μ, and high gm. Between those characteristics and the 12 pin base, finding suitable replacements (other than the "6" V. version) looks like trouble.
Hi Phil.
The diagrams arrived yesterday.
Many thanks for the nice clear copies, excellent!
No luck so far with finding a replacement transformer, but apparently they do come up from time to time on Japanese forums so hopefully will be able to get one before too long.
Incidentally, I do have quite a collection of circuit drawings, (many I've had to trace out myself) so if you're ever looking for something specific, do ask and I'll be only too happy to send you.
All the best
Henry
The diagrams arrived yesterday.
Many thanks for the nice clear copies, excellent!
No luck so far with finding a replacement transformer, but apparently they do come up from time to time on Japanese forums so hopefully will be able to get one before too long.
Incidentally, I do have quite a collection of circuit drawings, (many I've had to trace out myself) so if you're ever looking for something specific, do ask and I'll be only too happy to send you.
All the best
Henry
i repaired one a year ago. a 100v japanese unit. i have a quad of the 6ca10 and a pair of 50ca10's.....
a 21hb5 might work here. two tubes in series and a dropping resistor.....
i share your observations, the tube looks like a tv scanning tube internally connected as a triode, that explains the 400 volt limits....
Sowter should have replacements that you can try....
Attachments
The tube was based on the 6GY5 and 6HB5 but mate to a larger glass envolope for the higher Pdiss.
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