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Transistor Replacement On Zenith Royal 51 Transistor Radio

Transistor Replacement On Zenith Royal 51 Transistor Radio



A follow-up on the prior repair video regarding the defective 1st. AM, 2nd. FM IF amplifier transistor. Replacement confirms the first repair. The original transistor was the culprit. Replaced with a similar rated germanium type.

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Tags: transistors

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8 Comments

  1. Date: October 21, 2014 at 21:57
    Author: K2bew

    I just watched Shango066's video on this transistor yesterday, this is a great follow up to see it working, a great learning experence for me. Shangoo did mention that it needed to be aligned after changing, I think that is why your stations are off.Thanks and 73,Tom

  2. Date: October 26, 2014 at 02:10

    You may have to play with the biasing a wee-bit, but an overall "quite acceptable result"!  I'd be happy, and I'm an old curmudgeon!

    You guys may want to consider making (inexpensive) tooling for purposes of "potting" the leads into position. Henkel/Hysol E-60NC works well for this purpose, and doing so would add value to the end product. I'm going to be contacting Shango fairly soon, as I'm seeing a great deal of promise in his work.

  3. Date: March 1, 2017 at 08:20
    Author: HeeCheeFox

    Most interesting and informative video… I have a Zenith Royal 675 that needs help–it would be great to know how you isolated the problem transistor… C.

  4. Date: June 7, 2017 at 23:53
    Author: Kennynva T.

    I guess you could have pushed solid wire thru the holes on the foil side just to see where they are up top..it is a very hard think to do either way…

  5. Date: September 7, 2017 at 05:38
    Author: Ron Thompson

    I no this is a old video sometime old videos show up on you tube

  6. Date: November 1, 2017 at 01:58
    Author: jerome grzelak

    i worked at zenith in63 americans built this radio i have one 2017still works

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