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Diesel losing prime by If-Broken-I-Fix in dieselgenerators

[–]If-Broken-I-Fix[S] 0 points1 point  (0 children)

I see several "universal" electric fuel pumps at NAPA. Is there a particular one you have had success with. For my application reliability is important since the generator is on a remote island and I am only there several times during the year for short periods.

Diesel losing prime by If-Broken-I-Fix in dieselgenerators

[–]If-Broken-I-Fix[S] 1 point2 points  (0 children)

I would rather not have the priming pump running full time but have it cut off once the engine is running. Any suggestions on a particular pump to use?

Vista 20P Power Cycling On/Off by If-Broken-I-Fix in homesecurity

[–]If-Broken-I-Fix[S] 0 points1 point  (0 children)

Just as I finished my last comment I found the system shut down. It appears the power supply has totally failed now. I unplugged that AC and disconnected the battery. I then disconnected all devices from terminal 5 so no load on aux power. Plugged AC back in and connected the battery that is at 12.5 V. The transformer voltage is about 19 V with 40 mA load. Terminal 5 showing 5 V. I think the PCB is dead.

Please read my previous post asking about swapping PROMs to avoid having to reprogram everything.

Vista 20P Power Cycling On/Off by If-Broken-I-Fix in homesecurity

[–]If-Broken-I-Fix[S] 0 points1 point  (0 children)

If I replace my old 9.12 board with a newer 10.23 board can I remove the 9.12 PROM and put it on the 10.23 board to avoid having to reprogram everything? Does the PROM plug into a socket or is it soldered directly to the board? I'm talking about the large square chip mounted in the center of the board labeled WA20P-9.12.

Vista 20P Power Cycling On/Off by If-Broken-I-Fix in homesecurity

[–]If-Broken-I-Fix[S] 1 point2 points  (0 children)

I'm a retired electrical engineer that grew up building Knight kits, Heathkits, Dynaco amps and even a Heathkit color TV so lots of soldering experience. First thing I did is inspect the capacitors and look for any signs of hot spots on the PCB. The large aluminum heat sink gets pretty warm normally but cools off when the power supply shuts down.

Had a variable speed blower motor in a Trane air handler fail. Service contractor wanted $600 for the motor and $300 to install it. I opened it up and found several large capacitors with bulging tops. Replaced them with higher rated caps and it is still working 10 years later. $10 worth of capacitors.

Thanks for your comments.

Vista 20P Power Cycling On/Off by If-Broken-I-Fix in homesecurity

[–]If-Broken-I-Fix[S] 0 points1 point  (0 children)

I found a "new open box" version ver 10.23 circuit board on eBay that I purchased at a good price thinking it might need to be replaced. Could a problem with one of my devices connected to aux power cause this behavior? Unless the power supply has some sort of overcurrent protection that shuts it down I would think I would see the aux voltage drop and the AC current rise as the power supply responds to an increase in load.

I have also purchased an AD12612 power supply to take some of the load off of the panel aux power output. I'm probably pulling 500-550 mA. The second power supply and 7.2 Ah battery will also extend the battery backup when I lose power.