Finally got this set out of my system so I can crack on with the next thing.
I'll send the PDF to Brad to attach to this post.

Great little set and on thinking about it, made just when components were starting to be well made and last the distance.
If I had wanted to I could have left ALL the resistors and capacitors in place.
I am sure even the electrolytics could have re-formed with care and worked.

Had it not been for the Mice damage most of the other parts would have been serviceable.
The buggers had chewed through wires and windings as described and that required a lot of tedious repair work.
I am sure from a commercial view the set was a write off, requiring many hours of work.
However compared to some of the poor things I have previously fixed this one was a doddle!
PDF on the way,
Cheers, Fred.

Kriesler 11-60 Refurb - Part 3

Hi Fred.

I assume you didn't replace those pink capacitors. They are Anocaps (from Anodeon / Astor), they are polyester and are not original, too new. Looks like someone did a nice job of changing them.

Right on Ian!
Yes just the output grid cap even though it was infinite leakage.
Oh and the electros.
All the caps were soldered in with several turns around the tag strip holes just like originals.
Is it possible the factory got their hands on polycaps?
Fred.

No. I've never seen Anodeon caps used in any original Kriesler build, although they did use Anodeon transistors briefly in the PT1.

In any case those caps first appeared about 1968 from memory. That radio is much older than that.
I don't think I ever saw a bad one of those caps.

I'd say the service workshop probably got the apprentice to change the caps and he had access to a good de-solder tool.

Document uploaded.

I am curious about the build date of the set.
Ian is dating the set possibly in the 1960's by the use of the polycaps.
The only clue I can see on the set is the date stamp of 21 JAN 1957 stamped on the output tranny and the blue ARTSnP label.

The OPT looked very original and was riveted to the chassis.
Now that date stamp I am assuming is a production date on the tranny being put into store.
It may have then sat in stock for 10 years for all we know, but I do not think so.
I would expect a tranny to be used within a year of being stocked.

The ARTSnP label could be any year from 1955 onwards.
The actual set number 826238 may give a clue possibly if compared to other known date sets?

The thing with the polycaps is the leads are inserted and soldered into the tag strips intertwined with the leads from the carbon "IRC" style resistors. They are not additions, they were put there at the same time.

So from all of that the set may have been put together in a time band of 1955 to the 1970's.
The OPT suggests some time after 1957.
The polycaps suggest in the 1960's.

I know by now eyes are glazing over, but I love a challenge.

Do the DUCON type ET6C caps help the dating?
Does anybody have any data on the factory dating by models, that is when the 11-60 type was produced?
Does the presence of three Philips valves with the bottom seal (assuming they were the originals) mean anything?

Cheers, Fred.

I am thinking mid-1960s because there was the 11-90 and the almost evergreen 11-99 after that. The 11-99 was made for something approaching ten years I think, which is probably a record.

The plastics used for all these radios, and others made in the same era, were pretty cheap and nasty. The 11-99 probably stayed around for so long because it cost next to nothing to make.

To answer your question, the 11-60 Panoramic was on the market between 1956 & 1959. The date on the schematic is 15/2/56.

This particular model was superseded by the Panoramic 11-80 in 1959.

Well I think Ian was right.
I'm guessing the set has had an overhaul maybe in the 80's.
Some clever clogs has diced the original Ducon brown electros and wax caps (i have been looking at some web photos of 11-60's).
Maybe even swapped out resistors as well.
The original build date has to be about the date on the OPT, 1957.
Thanks Monochrome for the build dates.

Fred.

Ducon electros had grey plastic sleeves from the early 50s.