My $10 JVC Pyramid set (from Goodwill)

[zeno]

Thats a nice find, never seen one in person. Worth the price,
bet it would easily go over $100 on e-bay.
Look around for a focus control many small B&W had one.
If not its the CRT. If you need any basic info post the
model # & I will see if I got the book on it.

73 Zeno

[DaveWM]

maybe a frequency response issue on the focus. Would be nice to feed it a video signal from a BK anaylst (or scope a test pattern at the CRT and work back).
Maybe a ESR check on the coupling caps in the signal path.

[WISCOJIM]

Originally Posted by zeno

Thats a nice find, never seen one in person. Worth the price,
bet it would easily go over $100 on e-bay.

http://www.ebay.com/itm/JVC-PYRAMID-...item35d899a099

http://www.ebay.com/itm/RARE-VINTAGE...item4d1ecd7906

http://www.ebay.com/itm/1970s-SPACE-...item2c858cd51d

http://www.ebay.com/itm/Mid-Century-...item25915eefbd

http://www.ebay.com/itm/JVC-3100R-PY...item1e8cf0c541

http://www.ebay.com/itm/1970s-JVC-PY...item3ce7dfa59e

http://www.ebay.com/itm/JVC-Pyramid-...5#ht_25wt_1106


.

[DaveWM]

hmm the predicta of the 1970's it would seem.

[zenith2134]

There are other 70s portables which command a premium price on ebay.. the JVC videosphere, the panasonic orbital, the Sinclair 2" set, etc
I mean..they're cool and all especially since I have an in house broadcasting setup, but..I can't see paying 150-200 bucks for a little b/w portable! And then having it shipped!
To each his own. I like these sets for what the are though. I myself have a nice collection of early SS Sony black and whites as well as panasonic. The pop-up ones are my favorites.

[zeno]

Set does have a focus control. Its on the CRT brd.
Comes from 190 V boost C416 only lytic there. Its a 1 mfd.
Its on the HV board near a connector.
Focus should vary 0-190V at pin 7 of CRT
If interested in Sams PM me.

Nice to see the price of them & good for you !

73 Zeno

[Eric H]

Originally Posted by zeno

Set does have a focus control. Its on the CRT brd.


73 Zeno

Cool, I'll see if it helps. I probably should recap the sweep board, tough call though, good quality 70's Japanese caps might still outlast modern day crap shoot caps.