Recent content by Tony Emerson

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    Help! Replacement electronic controller required

    The original! The controller failure was due to a failed MOSFET, and I located an Electrical/Electronic Technician on Skye who offered to try replacing it (see post 35). He did and it worked........
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    Help! Replacement electronic controller required

    Apologies for the long delay in reporting. Finally got a test run in yesterday over 20 miles of Skye's best up and downs. Glad to report the repaired controller worked perfectly. Many thanks to all who provided such detailed advice and guidance on candidate solutions, and how best to achieve them.
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    Help! Replacement electronic controller required

    And the good news is: repeated the installation/connection process for the repaired controller and it worked! Awaiting opportunity to give the bike a thorough test run, but so far looking good. Will report outcome
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    Help! Replacement electronic controller required

    Your 50/50 well founded! All the LEDs lit up, but that was it! Can but agree re the wiring diagram, but limited it to what I could see as a reasonable basis for identifying a need to dismantle further if/when need arises. Before ordering same, grateful some more advice on the PSW...
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    Help! Replacement electronic controller required

    STOP PRESS: Have located a TV electrician who thinks he may be able to replace the damaged MOSFET. Not too sure of a successful outcome, but seemed worth a try, so purchase of the PSW Power unit on hold for now
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    Help! Replacement electronic controller required

    Firstly must apologise for going off line for a while, but got swamped with domestic imperatives various, so regret bike problem had to go to the back burner. Time not entirely wasted, as was able to draw up the attached wiring diagram. Thought this might help in the process of resolving...
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    Help! Replacement electronic controller required

    Noted thanks Will get the PSW controller and bits, and take it - with help - from there..........................
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    Help! Replacement electronic controller required

    Thanks for the info'/advice. Have frequently experienced the thermal cutting in/out on the Isle of Skye's hills. Indications of trouble to come! Having had to "shoehorn" a 6 x MOSFET unit plus wires and connectors into the existing housing (see sketch below) seems unlikely it will accommodate...
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    Help! Replacement electronic controller required

    In post 24, fault 4, you refer to the problem of high power selection and slow bike speed leading to MOSFET failure. It appears from this that exchanging the failed controller for a similar design unit would leave me with a replacement unit also prone to MOSFET failure. Would a more modern...
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    Help! Replacement electronic controller required

    Thanks for the comprehensive response As it was (for me) the easiest to do, tested for fault 4 (blown MOSFETs) first, with the following results: Motor phase Blue to battery +ve - resistance = 10.88kΏ Motor phase Blue to battery -ve - resistance = 6.04kΏ Motor phase Yellow to battery +ve -...
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    Help! Replacement electronic controller required

    Many apologies for the confusion To clarify: My wife and I both have a Freego Hawk bike and these have identical controllers. Whilst in use her machine stopped working – i.e. would not respond to pedaling or to rotation of the hand throttle. There was no obvious reason – e.g. smoke, fire...
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    Help! Replacement electronic controller required

    Installed the faulty controller in place of the working unit in the “good” bike, as latter was known to have no controller damaging faults . The two controllers have identical model numbers. The outcome of a trial run of this set up was as follows: All “the battery is charged” LEDs lit up The...
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    Help! Replacement electronic controller required

    Firstly, to clarify re my tests so far: the controller I took out and replaced is the one currently fitted, and not an alternative. What I did change was the battery. Apologies for not making that clear. Thank you for the offer to look at other possible causes of the failure. Before doing so...
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    Help! Replacement electronic controller required

    PS the green wire is sealed into the Blk/W/R connector with a tenacious plastic filler, so not directly visible. Checked it electrically via the connector pins and, as far as I can tell, the green and white wires are are connected to each other in the connector.
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    Help! Replacement electronic controller required

    Thanks for the ideas on the way ahead; I'll give them some thought...................