Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old March 12th 04, 05:17 AM
freddy
 
Posts: n/a
Default SX-28A Problem - Need Help


This is a question for a SX-28A expert out there.

Well, I've really done it now. Elmer has struck.

I had a wax cap heating up in the RF Deck and so I went in and replaced
the bad caps and resistors in the 1st, 2nd, and mixer boxes. Not fun. I
really didn't want to, but I didn't think it was going to last long. I
marked all the wires as I dis-assembled thinking it would be easy to
re-assemble.

When I got to the point to hook up the wires connecting to the 4 pins on
the top of each metal box I found the wire marker fell off a blackish
wire. It looks like it should connect to the mixer box pins, but I
don't know which one. It doesn't seem long enough to reach much of the
other boxes but I suppose it's possible to get to the 2nd stage maybe.

The "mystery wire" is blackish color, and I think it goes to a terminal
strip connector. A 1K resistor goes from that terminal strip connector
to the 6L7 pin 4. I think it should connect to 1 of the 4 pins on top
of the metal mixer box but I can't figure out which one.

Does anyone have a diagram of the wire connections to these boxes?


As SX-28A is on side with IF cans on top, from bottom of chassis the
view looks like this: (Oscillator box not shown)


==Front Rear ====

1 2 3 4 5 6 7 8 9 10 11 12
| | | | | | | | | | | |
|--------------------| |----------------| |------------|
| Mixer Box | | 2nd | | 1st

| | | | | |
| | | | | |
| | | | | |
| | | | | |

Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Inverted V Noise Problem Warren Bowery Antenna 9 November 29th 04 02:19 AM
s9 noise problem related to position of antenna tuner? tedoboxer Antenna 5 March 1st 04 03:02 PM
Heathkit SB-200 Amplifier Problem Help? LJ Boatanchors 10 December 13th 03 04:26 AM
Drake Reflector/C-Line Problem Henry Kolesnik Boatanchors 3 October 9th 03 11:56 PM
Cushcraft MA5B problem Andy Antenna 0 August 9th 03 10:50 AM


All times are GMT +1. The time now is 12:29 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017