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miniman82 10-19-2017 11:16 AM

Halolight flyback?
I recently picked up a Halolight but unfortunately it won’t make any HV and fails ring test after recap. If anyone has a Merit HVO-54, Thordarson FLY-76, Triad D-49 or other suitable replacement please let me know. Chassis is a 1-533-8.

snelson903 10-19-2017 01:10 PM

i might have a thordarson 76 , ill look tonight.

miniman82 10-19-2017 09:14 PM

Thanks for looking Steve.

snelson903 10-19-2017 10:01 PM

sorry, thought i might have one ,been collecting as many as possible .

Eric H 10-20-2017 01:47 AM

1 Attachment(s)
Does it look like this?

miniman82 10-20-2017 10:36 AM

That’s it!

Eric H 10-20-2017 11:53 AM

It's yours for shipping if you want it.
P.M. me with your address and I'll get it sent.

miniman82 10-20-2017 12:23 PM

Wow, thanks Eric!

miniman82 10-20-2017 08:08 PM

Just to make double sure the old fly is bad I subbed in an air core HV transformer, which immediately made a nice fat arc. So the old fly is definitely bad, must have a primary short since it’s all discolored in that area like it got really hot.

I’ll post a shot of this set running next to my Saratoga, soon as I get a decent picture on it.

miniman82 10-23-2017 07:37 PM

Part received, thanks again Eric. Any chance there’s a wiring diagram for the HVO-54? Not really sure how it goes in.

Eric H 10-23-2017 09:10 PM


Originally Posted by miniman82 (Post 3191181)
Part received, thanks again Eric. Any chance there’s a wiring diagram for the HVO-54? Not really sure how it goes in.

No, I looked through the box it was in and didn't find it.

Kevin Kuehn 10-23-2017 09:17 PM

If someone has a Merit catalog it likely would show their fly types schematically with the terminals numbered.

miniman82 10-23-2017 09:45 PM

Never mind, there was a terminal conversion chart in the back of the Sams. Next issue is I’ve only got 6kv, I’ll play with it a little more this weekend.

miniman82 11-06-2017 08:53 AM

HVO-54 is installed and working, but it’s only making around 7kv of anode voltage. Anyone know if this particular fly is OK to use with low B+ chassis, or does it need 385v like other sets? Sweep width is good, output tube draws around 160ma, just low HV.

Eric H 11-06-2017 10:49 AM

I noticed that Fly had been soldered on before I sent it to you, I wonder if it could have been a dud from the beginning?

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