Power Supply Gottlieb System 1 USE PJ-B-18396

To disassemble the original power supply:

• 1. Unsolder the large TO-3 transistor

• 2. Remove the 2 TO-220 bolts and isolators

• 3. Remove the two screws that hold the board onto the heatsink.
  Once disassembled, the board will not work because the TO-3 transistor has been removed. This makes troubleshooting very difficult.
  To re-assemble, reverse the above procedure and apply fresh heat sink compound to the large transistors.
  The GPS002 PCB eliminates this entire procedure. It only takes 3 screws to remove the board from the mounting plate. Once the board is removed, you can troubleshoot the board with the power on because you have not removed a TO-3 transistor! Reassembly is just re-attaching the 3 screws.

Adjustment Elimination
The original System 1 board has two potentiometers that require adjustment for output voltage level and over voltage protection (see above). These adjustments require the use of a volt meter, screwdriver, and an extra hand. The GPS002 eliminates all board adjustments. It is truly a "Plug and Play" design. No adjustments, no potentiometers, no voltmeter are required.

Obsolete Part Elimination
Several of the parts on the original System 1 board are no longer available. If you search hard enough, you can find parts that are similar, but the reliability of old stock components may be questionable.

The GPS002 is made completely from new components that are currently available from many different suppliers.

Aged Part Elimination
Almost all existing System 1 boards are populated with components that are ~25 years old. The quality/reliability of semiconductor products designed for today's market are superior to those of the early 80's. Original electrolytic capacitors degrade with time and, though not yet defective, may not perform correctly.