[Randy Bassham]

Following from the Magnavox Service manual for the T908 Series Transistor Television Chassis...."The T908 Series Chassis is used in Magnavox Astro-Sonic Television models featuring solid-state circuitry. The chassis employes a total of 22 transistors (18 on the main chassis, 3 in the VHF Tuner, and 1 in the UHF Tuner) plus 23 diodes and one dual-diode for Horizontal AFC. The chassis is designed to be used with 110 degree picture tubes such as the 23MP4, 24AHP4, and 27ZP4. The high voltage section provides 18 KV for the CRT Anode. This is in Magnavox Service Manual Volume 6 dated 1967. The product information section of the manual shows the T908 chassis being used in TV only consoles, 19 inch portables, and combination sets, in the service lit. they are all referred to as Astro-Sonic. I've got one of the 19 inch portables and it says Astro-Sonic on the front. I've got all the service info Magnavox published on these sets if you need a copy. I used to service these sets and remember them as being prone to problems especially in the HV sections. They did use a 1K3 tube for HV rectifier, and by now you probably need a bunch of low voltage electrolytic capacitors. Before you sink a lot of $$$ trying to make it work get the CRT checked, a lot of those 24 and 27 inch B&W tubes didn't last a long time. Good Luck...


Checking further in the manual the version of the T908 chassis that was used in the 19 inch sets was the T915, It's almost identical to the T908 except for the deflection circuit changes to accomodate the smaller CRT....