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Okay so here is an update!
Replaced bulbs that were out on everything except those that are below the CB Channel indicator which now does not illuminate at all when the unit is off and nicely when it is on. This confirms a user's post about this issue.
Replace the switch with one I got from...
LC,
You are definitely on to something with this switch. Rather than solder it I user alligator clips on the front terminals. Well, what happened will tell the tale.
1. CB band is perfectly illuminated
2. AM does not illuminate but LSB and USB do when I switch to them.
3. The counter is on...
LC,
I decided to first test continuity on the switch terminals before attempting the solder junction.
BK WHT RED
#1 | | #2
#3 __ __ #4
#5 | | #6
Here is what I got when I tested continuity.
Terminals...
LC,
Yes, I agree. Now I changed the 10uf 25v cap on the power board and still no change. You know I am beginning to wonder that the switch may be the issue. I can't wrap my head around opening a circuit from ground instead of from hot. This is very weird. The power board has the name low...
I had the correct the first time pin 2 towards the back which gave 4 5v to ground. Unsoldering the other pin while resoldering 2 gives 0.00v to ground. I had it right the first time so why is the voltage low?
LC,
Unsoldered pin 2 and checked the trace against ground which gives 4.5v! Checked pin 2 from that regulator against ground and am getting 8.00V. What gives? Pin 2 based on the tech sheet would be toward the front correct? It would seem I am not getting 13.5v at the trace.
Note this LC...
8. 6.48v
7. 6.50v
6. 6.49v
5. 5.09v
4. 7.50v
3. 5.06v
2. 5.09v
1. 6.45v
Voltage from fuse = 13.58v
Also, I now see one more led on the clock after 12:00 0<= this flashes?
Didn;t see that ever but it has been plugged in for a while.
Okay, I believe I have the correct IC. The voltage is 6.4v but it fluctuates just a little then back to that voltage from pins 1 and 8. This does not surprise me because the voltage from that one smaller board in my previous post is only 4.5v!
So I have narrowed it down to the board adjacent to the rectifier. 19v coming from the main 4700uf cap to this board with 19v. The C1419 transistor only reads 4.5v as does the mylar capacitor next to it. Could this transistor be bad?
Update:
Checked the switch and that is good!
Removed bridge rectifier and checked with meter on diode setting and that is good.
Replaced bridge rectified and established the same baseline clock works, faint CB channel, and no power.
Replaced 4700uf 35v main cap and still the same
Next step is...
I have checked continuity in the off position vs the on and the switch works as it should. When you switch on, there is a break in continuity from the terminal at the off on both hot and switched hot. Also, you now have continuity on the second set of terminals to hot and switched hot. In...
Okay, I found test points 7 and 8 on the main board. Against ground, they are 14.1v and 14.0v respectively.
It did take some time to level off to those values.
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