[BC] Need clock for SX-5 w/ Sunwatch

[Mike McCarthy]

The rotary switch is also a sore spot for me.  I ended up jumpering it 
out of the circuit.  Problem solved.

MM

> The SLC-1 has not been supported by the original manufacturer in
> many years. It is an integral part of the Sunwatch system and is
> difficult to troubleshoot on the bench due to its integration with 
the
> System Controller board in the SX transmitter. A remote control
> or external relay will not have the same integrated features as
> Sunwatch. For example, the AC power fails one minute prior to a
> power change. Sunwatch will 'wake up' at the correct power. A
> relay closure would happen when the power is out. The SX will
> not 'wake up' with the correct power.
> 
> >From experience, here are common problems with the SLC-1.
> By far, most are power supply related. Replace all the caps, or
> install a new supply which is commonly available. The next failures
> are with the CD4536 chip nearest the small crystal/front panel toggle
> switches. Also the 74C08, 74LS74AN in line with the crystals and
> the 6502AP chip. Be sure to press the Reset button on both System
> Controllers after installing the SLC-1 just to be sure it integrates
> properly. You can also use an RS-232 tester to see if the clock is
> pulsing.
> 
> Tom Osenkowsky, CPBE
> 
> 
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Reply to <towers at mre.com>
>From my traveling acount...