Original Electrohome flybacks

KenLayton

In Memoriam
Joined
Dec 14, 2003
Messages
20,220
Reaction score
712
Location
Olympia, Washington
These original suckers will often EXPLODE after a fresh capkit.

Here are pictures of an original Electrohome flyback.

If yours has this green label on it then it's an original.

Clean yours off and examinie it closely for pinholes and cracks. If yours has a crack like the one that's circled, then it's about to blow up. Maybe not now, but eventually it will explode the next time it gets powered up. I cleaned this one up some that you could read the label and see the crack in it.
 

Attachments

  • Electrohome fly.JPG
    Electrohome fly.JPG
    54.9 KB · Views: 44
  • Flyback label.JPG
    Flyback label.JPG
    48.1 KB · Views: 45
  • Flyback crack.JPG
    Flyback crack.JPG
    29.4 KB · Views: 57
Last edited:
Thanks Ken.

I've been meaning to ask this same question for a while. I've always known the original flybacks to be bad, but just didn't know what the original looked like.
 
The last batch of reproduction flybacks are light gray in color. Originals are more of a "bone" white or antique white.

A29951-B is the original Electrohome part number for this flyback. The reproductions often use Electrohome's original part number on a solid white paper label.

Two Phillips head screws (along with the flyback's pins being soldered to the board) hold this flyback. The early reproduction flybacks were a bright white in color and did not have the screw holding plastic section molded. These flybacks were only soldered to the board.

Sometimes a bad original flyback will splooge a black smoky mess onto the main board in the vicinity of the flyback. Usually 99% isopropyl rubbing alcohol and lot's of elbow grease will take that crap off. I think "flux remover" spray will clean that off too.
 
Last edited:
Yeah, those original flybacks don't seem to like the stress a properly functional chassis puts on them. I did a recap on a G07 in a Centipede that was starting to get warpy and distorted. After the recap the picture looked great... for a couple days. Then, one day there was a pop and the room filled with smoke. It was pretty impressive...

That said, I've seen several of the original flybacks that were still good, and hold up just fine. Just inspect them closely for evidence of cracking and damage. I also see several G07's where the flyback had been replaced many years ago.

Fortuately, G07 flybacks are readily available from all the usual sources.

-Ian
 
I think it's less that the original flybacks are crap, and more that they've reached the end of their usuable life. A lot of them are almost 30 years old! I'll be curious to see how the new flybacks hold up after that long.
 
Back
Top Bottom