If one of your tantalums reads 0.8 Ohms,it is either short circuited,or is connected across something which has gone short circuit.
Pull that tant out & test it out of circuit--if it loses the short,the fault is somewhere else.
The tant with "+33 then under that +16" on it is a 33uF 16V cap.
The + + signs are just to make sure you put the cap in the right way round,they are not meant to be read with the numbers.
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Success...sort of.
The Tantalum was shorted...I replaced it...and the power supply seems to work.
One question: This power supply supplies "negative voltage". All ratings are -14v etc..... Positive from the battery is 0 volts. When I reduce the voltage input, the output voltage goes up. At 4V input, I get 12V output. At 1V input, I get 14V output. This makes no sense to me
I did put everything back in the TI-59 and wonder of wonders it fired up and seemed to work OK....However after about 10mins, the card reader started running on its own (I was not even touching the unit when this started).
I checked both sense switches for the card reader and both seems to check OK.
If I turn the unit on with the CLR button held...I get a 0 with the card reader off....as soon as I let go, the card reader starts up and the display goes blank.
Anybody have and clues to this one or can you point me in the right direction of where I might look?
Thanks for everybodys help TS this issue!!
-Dave