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Challenger AP200 with remote keypad - all in otherwise good order BUT seems to have no strobe signal in alarm or test mode. New External sounder's Strobe can be triggered by pulling STR- down to 0VE/GND. In test mode the ST- terminal on the AP200 board indicates 0.65V which doesn't vary if...

I've just been trying to find replacement guide rollers for a bifold Shower Door; since 2 of the original 4 have failed. It seems extravagant to buy a whole new shower cabinet, instead of just these rollers. There's plenty of replacement Nylon outer race ball bearing rollers listed in the...

Celtic FF 2.20 of 15 years vintage has recently developed an intermittent Pilot failure. Symptoms: Only after prolonged DHW usage, eg 10mins shower the pilot will sometimes extinguish. After the main burner shuts down, for the next 20-30 seconds, the pilot gradually fades, so TC cools until...