[bars] When is a fuse not a fuse?

[Tim KC1RET]

The saga of my 'dead' TS-2000 continues.

So after hours of deciphering schematics and finally performing a radio 
autopsy on my kitchen counter I was struck with this conundrum... How 
could the supply voltage read 13.8v at the connector, but only 5.2 where 
the wire connected to the main board?

At first I suspected the filter caps. They are soldered directly to the 
back of the connector inside the radio, dead-bug style. I cut they 
leads, one-by-one and they were all good & no change to the voltage 
reading. In a fit of desperation, I checked continuity between the board 
and the back of the PS; + was good, GND, not-so-much. Huh?? It was 
measuring 2.5k ohm! I disconnected the PS lead from the radio, 2.5k 
between the PS lead connector and PS terminal. Ah HA! (he says - well, I 
really said something else quite a bit more expressive but I'll leave 
the specifics to your imagination) I pulled the inline fuse out - Yup, 
it read not open, not short, but 2.5k. I replace the fuse and the rig 
fired right up!

So, when is a fuse not a fuse? When it is a resistor!

That is a new experience for me -- I'm def. NOT going to forget it.

73,

T.


-- 

Courageously sent from a non-Apple device that /includes/ a headphone jack.

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      Tim Carter - KC1RET

			

	+1.978.710.0133 <tel:1.978.710.0133>

	kc1ret.radio at gmail.com

	https://kc1ret.com

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