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A fanboy kid's interesting review -

hush!

An interesting page from Tubelab - you may know it already - http://tubelab.com/articles/tube-testing/6av5-sweep-tube/

Yep, these non-linear story telling is being overdone

Criminal Record on Apple TV - getting to quite engaging now

Buzz has a reco for the rat pee stink removal here

yes, exactly! anyways the LEDs these days are suuper bright...even 1 should do fine

Gadget , one trick folks have used is a 12V walwart transformer in reverse - it gives a 1:10 boost, and also acts as an isolation transformer (see the posts by westcoastjohn here) - https://www.antiqueradios.com/forums/viewtopic.php?f=6&t=344209&start=40...

And did you have to do anything to where the heater winding are connected (eyelets 3 and 5 on the board)? If not, I guess the heaters are floating and not elevated any more. PS: apologies for the off topic posts, away from the main "positive feedback" topic . maybe we should split off the...

Great post, Gordon. It made me take another look at Shannon Parks diytube st35 clone. The diytube design has individual tube bias, and there is a 100 ohm resistor from each end of the heater winding to ground, forming a grounded virtual center tap for the heater. given that the dynaco design...

Didn't the TVs of that era run series heaters directly off the 110V mains?

I am not sure how the OP concluded that the Ali 6L6 pcb is a Dynaco ST35 design. It is nevertheless a design from a Dynaco catalog - http://diyaudioprojects.com/Schematics/Push-Pull-EL84-6BQ5-6V6-6AQ5-Dynaco-A-410-Tube-Amp-Schematic.htm...

Also see "Converting tube radios to solid state" in this doc - http://hvra.org/wp-content/uploads/2017/11/Nov-Dec-2011-GL.pdf

A couple of interesting threads on this topic from my bookmarks, from the British radio forum - https://www.vintage-radio.net/forum/showthread.php?t=199509 (this one gets extra marks for being or having been a "Mullard") https://www.vintage-radio.net/forum/showthread.php?t=174788

Post #2 here has the dimensions of the cutout - https://www.diyaudio.com/community/threads/anyone-know-the-dimensions-of-a-dynakit-st-70-pcb.194230/

JP, you could probably look for a vintage console - https://washingtondc.craigslist.org/nva/for/d/springfield-1940s-rca-stereo-console/7596670691.html

You can check out "Mister Radio" channel on youtube ; he adds a bluetooth input to pretty much every radio he restores -

These bargraph tubes are current controlled. There are arduino controlled vu meter circuits which are not too complex. http://eequalspi.com/index.php/2017/02/13/in-13-stereo-vu-meter/ https://www.instructables.com/Nixie-bargraph-clock/ Mike Mooreess (threeneurons) has a lot of useful nixie...

Stanko, Hope your testing is going good. I just recollected this post on another forum - the inductance measurements might be of use in your testing - https://dynacotubeaudio.forumotion.com/t3215-help-with-z565#42631 Cut and pasted from the link above for each reference - Secondary...

Stanko, what is the white tape/insulating material? Did you use onion paper between layers, like the original?

wow - it's all so laborious to do manually (would be cool if some Arduino geek could automate all of that). Great work in getting this done and that it passed the dc ohms checks. Look fwd to the audio tests :) There's a great page from Patrick Turner on transformer winding - the diagram he has...

Yeah , this one belongs here and not in the Turntables forum ; a very interesting repair video of a Komatsu earth mover. There's a Mother Of All Pullers, around min 8 - any bearing puller I ever saw is piddly compared to this one.

Somewhat related (sorry Stanko for the off topic posts) - there's some great info on the PA774 power transformer windings here https://www.vintage-radio.net/forum/showthread.php?p=1518334

An interesting article from 1948....three quarters of a century and it is amazing how much of it is still quite relevant. Stanko, if you wind another one, it will be awesome if you make a video of the steps - makes it so much easier to understand all those layers.