Sir pharaon . . . . .
Does this mean that this is being your only meter . . .or at least . . .the best one . . . .what, with it having that 5 digit readout display.
Thereby, shooting down our pending progress on the HT1500 receiver S.M. Pwr Supply ?
Since OHMS - DIODE and BEEEEEEEEEP function are shared. Is there a possibiity of having erred and placed an accidental voltage presence, while testing in any of those modes?
The first things that I would check would the overvoltage protection afforded by two sets of series arranged pairs of transistors.
Their connective function is to serve as protective zeners on that circuit path.
They are being the units Q1-Q8 and Q5-Q6 pairs.
To evaluate, lift the emittter which is being grounded . . .loose from its ground on both sets of transistors..
Then you check out the OHMS - BEEEEEP - diode function modes, to see if returned to normalacy.
Additionally check out all of the OHMS ranges for ~ accuracy using 10 Ω-100 Ω -1k -10k-100k and 1 meg test resistors.
Also see if the DC volts function is still good.
AND . . . . . . I hope that when you removed the range knob, that you kept track of the arrangement of the sets of spring connectors that complete connection between the PCB's 8 etched out circular ring segments.
Along with the spring loaded detent indexing B-B.
73's de Edd . . . . .
You can never, never, never trust a dog to watch your food.