Question about Brookstone Pure Ion Advanced Air Purifier Cleaner Ionizer 506840

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Find out the electronic circuit voltage

I used a 120 50hz transformer and I think I burned up the power sully coil. I checked the circuit board and didnt see any burned circuits

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I am an electrical engineer and I do not fully understand your question. If the unit is designed to operate on 50/60 Hz, it cannot be damaged by operating it at either of those line frequencies. Mnay products today will operate at either line frequency.However, if you used an adjustable voltage power transformer (a.k.a. "Variac"), you may have "under-voltaged" or "over-voltaged" the device. If there is a circuit breaker, try resetting it. Otherwise, there may be a circuit board-mounted fuse internally that is now electrically "open." That can be tested with an Ohmmeter for continuity. (Finding a replacement may prove difficult.)

Operating a line-powered device above or below its input limitations can permanently damage internal power supply functions and, perhaps, other circuitry as well.

Solid state components can fail "open" or "shorted." If they fail "open" they will not draw appreciable current to "burn" them in any obvious way.

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

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Light doesn't come on, does not purify the air.fan runs


If the little orange neon light no longer comes on, it is a problem with the high voltage board and transformer. The board sits on top between the plates and the fan.

In my instance, the board had become corroded and shorted the terminals of the voltage regulator located on the board. Also, the ground strap around the ferrite core of the high voltage transformer had become corroded an needed replacement. Also, check the circuit paths from the nearest components to the Voltage Regulator pads. Mine blew one of the circuit traces.

All in all, I replaced the Voltage Regulator, Mouser P/N: 595-UA78L12ACLPE3, Transistor P/N: 512-2N4403BU, Timer IC P/N: 595-NE555P.

The voltage regulator feeds the latter two, as well as the high voltage transformer, I replaced those components as a precautionary measure.

The terminals do get corroded, so check those as well. There are no terminals on the high voltage board other than on top of the proprietary potted black box that feeds the target and neon light. Be careful with the terminal on that box because it breaks easy once corroded. As mine did.

Those components fixed my problem with the high voltage board and no neon light.

Hope this helps, let me know if you have any other questions.


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