THIS WAS A SCORE AT THE 2012 EARLY TELEVISION CONVENTION. I CHECKED THE CRT AND IT LOOKED GOOD, DESPITE GREEN BEING A LITTLE SLOW. I WAS ALSO TOLD OF POWER SUPPLY PROBLEMS.
I DISCOVERED ONE OF THE WIRES GOING TO THE FILAMENT WAS BROKEN INSIDE THE BASE. I BROKE OUT A SMALL SECTION AND WAS ABLE TO CRIMP ON A NEW WIRE. THIS WOULD COME BACK TO HAUNT ME.
NOW TO THE CHASSIS. I BEGAN REFORMING THE LYTICS. I FOUND A 470 OHM RESISTOR BLOWN IN HALF. I SOON FOUND OUT WHY. THE SECOND FILTER IN THE CIRCUIT WAS SHORTED. I BELIEVE THE PREVIOUS OWNER PLUGGED IT IN AND TRIED IT. I COULD JUST PICTURE THE "KAPOW" AND MAGIC SMOKE. I INSTALLED A TEMPORARY REPLACEMENT UNTIL I COULD RESTUFF THE CANS.
POWERUP ON THE RIG WAS UNEVENTFUL. AFTER TWO WEEKS OF HEAT (NOT THE MIAMI KIND) AND RAIN, I WAS FINALLY ABLE TO GET THE CABINET INSIDE. FIRST, I NEEDED TO REMOVE THE CRT AND CLEAN THE SAFETY GLASS. IT HAD AN OIL-LIKE GOO ON IT AND THE FRONT OF THE CRT. A GREASE CUTTING DETERGENT REMOVED THE GOO. I THEN CLEANED THE GLASS WITH REGULAR GLASS CLEANER AND REINSTALLED THE TUBE.
ONCE I PUT IT BACK TOGETHER, I FOUND THE CRT WASN'T AS GOOD AS I THOUGHT. I ENDED UP HAVING TO POP THE GREEN GUN WITH THE BELTRON. I WAS HAVING BLOOMING ISSUES. THE 3AW2 HIGH VOLTAGE RECTIFIER WAS NEAR DEAD. I DIDN'T HAVE AN EXACT REPLACEMENT. AFTER CHECKING THE TUBE MANUALS, I FOUND THAT A 3BT2 WILL WORK IF ONLY PINS 1 AND 12 ARE USED.
ONE DAY, I NOTICED THE SCREEN WAS DARK. I HAD ARCING IN THE CRT. I THINK THAT FILAMENT WIRE BURNED THROUGH AND COMPROMISED THE VACUUM. THE CRT IS DEAD. I HAVE SINCE FOUND A REPLACEMENT. I HAVE THE OLD ONE TO EVENTUALLY BE REBUILT.
THE NEXT SHOTS SHOW THE CHASSIS AND A SCREEN SHOT ON THE OLD CRT.
