Quote:
Originally Posted by jhalphen
Hi Timmy,
I think you're close: have a real hard look at the 1000pf cap between pins 4 and 5 of the AN5760, maybe it's a trivial as a bad GND on pin 5
To help: closeups of the block diagram + application note schematic of the AN5760.
Last document is a high-zoom of the TR-1010P's schematic showing the AN5760.
Timmy, i don't know what the DC voltage on pin 6 should be but it is the output of the V amp power section driving the deflection coils and the Pana manual specifies 10V peak-to-peak. A VOM reading is meaningless here, the only way to measure this is to see the sawtooth on a Scope (borrow one?)
Hope this helps...
Hi Sandy:
My experience on many of the Panasonic TR-series 1.5" micro-TVs:
TR-1030/1031 always work - built in the second half of the 80s
TR-1010/TR-1020 - before 1984 - a lot of failures, mainly V Scan, no sound, dead or very unsensitive tuners.
Exceptions: TR-1000 nearly always work - better caps!
TR-001, same thing - 1972!
CT-101 shoddy plastics: look at them, they break!
Not really Panny's fault but the people who made the plastics. When new in 1984-1987 they weren't brittle.
Just my 2 Cents....
Best Regards
jhalphen
Paris/France
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i forgot to mention when i first got this set the focus diode was bad and its a BB21 and i cant get any info for a replacement so maybe this has something to do with it. i used another diode from a b@w set but much bigger but i got it to fit . it may be wrong for this app i dont know.