Videokarma.org TV - Video - Vintage Television & Radio Forums

- Early B&W and Projection TV (http://www.videokarma.org/forumdisplay.php?f=19)

- - Amperite ballast cross reference (http://www.videokarma.org/showthread.php?t=270352)

Amperite ballast cross reference

Does anyone know the cross reference number for an amperite ballast for the Motorola vt71 tv, I know there are 2 different ones, ts18 and ts4d both are not interchangeable.

Quote:

Originally Posted by timmy (Post 3198317)

Does anyone know the cross reference number for an amperite ballast for the Motorola vt71 tv, I know there are 2 different ones, ts18 and ts4d both are not interchangeable.

I'd have to look at mine!
My set must be a TS4 series, as it was built in early 1949. Mine does have the Amperite glass ballast tube. If I needed to replace a defective ballast in that set, I definitely would go with capacitive reactance dropper scheme. There is a few WW resistors that have to be used as well.

17A485459 is used in the newer chassis - TS-4J and TS-18

17A470303 is the older one for the TS-4, TS-4B, TS-4C, etc...