SB-822 TR-2400 Battery Charger Failure 4-22-80 The stock charger (W09-0307-05) supplied with the TR-2400 may be rapaired and/or tested as necessary. Open circuit, the charger should deliver 18-20V. Current when charging sould be 45mA. Contained in the charger, in series with the output is a 120 ohm 1/2 watt current limiting resistor. Under normal use (including momentary short circuit test) this part should not fail. If you receive a charger with no output, the unit may be opened by fracturing the glued seam by a sharp moderate hammer blow. Place the charger on its side ofon a hard, flat surface. A layer of cloth at top and bottom will protect the case from marring. Strike the seam first on one side, and then the other. The case should open in two pieces. Replace the 120 ohm 1/2 W resistor with a 1 W resistor. After replacing and before closing the unit, perform voltage and current checks. A spot of glue or cement at each corner will reseal the charger. JEB/yn (c) 42280TKC