Just don't rush thru a step.
Patience with the Patient.
To help with Eye strain, use a Magnifying Glass as much as possible...
Look for shorts - In some of my own Documentation efforts, of radios I still have - I find several ones that my XYL owned and left behind - I can see why. Can't say who did the work, but if she tried, I can feel better knowing she tried, may not have helped - but she did try to apply herself - I can't fault anyone for that.
Not too long ago I posted something like this...
[ATTACH=full]43691[/ATTACH]
- There are several areas of concern, one being - if you recognize the bottom of this board, you should, it's another 148 like yours, someone replaced the final - note that one in the middle - if the FINAL and its' Emitter leg when it was soldered, even BONDED the Boards Power Grounds - to Chassis back panel - which contained a tab to hold the board and also provide a RF current to go - but keep DC contained to the main PCB.
- This board was made in the years Uniden had made "Insulated" chassis radios designed for Mobile use. Some vehicles back then had used a Positive Ground ignition system - the power wires were used and when you bolt the antenna on, the bracket to the mounting location - the radio's DC power has to be INSULATED from the EARTH ground - so they used these tabs to allow RF to circulated thru in and out of the radio - but keep DC voltages from causing a dead short.
- In the above, that would have caused an epic fail - possibly blowing the traces from the power supply feeder lines and even the opening up the power switch contacts.
- I've had Family member with the notorious ability to take brand new things and burn them up by attempting to wire up to their vehicles ignition - only to burn up the radio beyond warranty repair simply because they were in a hurry and didn't pay attention to details - lesson learned - but a D*mn good radio got burned up in the teaching moment.
So as you work thru the process, look for simple things; you did have that radio apart - there's items that may have been moved, pushed back, adjusted or ignored because of the initial effort was to re-cap a radio In doing that, you may have overlooked another condition that can occur - foil trace tearing - where the solder pads "lift" from the board for the adhesive behind the pad, designed to hold it in place, loosens and lifts - it can tear the trace in two from the removal, insertion and resoldering - and considering the age, this is a more probable condition that not.
So I recommend a moment of DVM across the capacitors so you can verify a voltage difference exists - no voltage, may mean a dead short or blown part.
