EMERSON LF391EM4 – EMERSON LF391EM1 – MAGNAVOX 39ME313V/F7 –
POWER SUPPLY [SMPS] SCHEMATIC
Fixed voltage (or Auto voltage selectable) power supply circuit is
used in this unit. If Main Fuse (F602)
is blown, check to see that all components in the power supply circuit are not
defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the
power supply circuit to fail. Because a hot chassis ground is
present in the power supply circuit, an isolation transformer must be used when
repairing. Also, in order to have the
ability to increase the input slowly, when troubleshooting this type of power
supply circuit, a variable isolation transformer is required. For continued protection against risk of fire, replace only with
same type 2.5A, 250V fuse.
MAIN POWER REGULATOR SCHEMATIC
BACK-LIGHT POWER REGULATOR SCHEMATIC
POWER PWB - TOP & BOTTOM VIEW
CLICK ON THE PICTURES TO MAGNIFY
