Threads 1 and 2, in General chat.
http://forum.allaboutcircuits.com/showthread.php?t=21507
http://forum.allaboutcircuits.com/showthread.php?t=21511
Before I heat up the Iron.
Does anyone have any suggestions of things I should test?
My inclination is that the protection diode supplied and installed by the hoover contractor(cyntec) exceeded it's thermal dissipation, destroying its self and once it had "let out the magic smoke", the next usage caused the transistor to follow suit. It was brought up that this maybe in error and there might have been a short.
This is quite the fancy vacuum, it has a main motor current sensor(stall protection?), main motor temperture sensor (over heat protection), several smaller motors, one spins the hepa filter to clean it, one raises and lowers the the ride height, one engauges a roller bearing to tension/start/stop the beater/brush bar, and an unidentified sensor to detect "embedded dirt" (it was glued in behind some foam, possibly an impact/shock sensor). All controlled by a ZiLOG 20pin microcontroller (as of yet not properly identified). With an exposed debug port! Aside from being broken, my only complaint is it is a bagless which means it's a bit dirty inside the housing nothing some stratigicly placed weather stripping wouldn't fix I am sure..
It has six junction connectors, I haven't tracked down who(thats what wires) goes exactly where yet.
J6: GND, CHA_LOC, V33(3.3v), CHA_POS, CHA_COL
J5: TP1, GND
J4: GND, POWER_SW, HA_KNOB, V33(3.3v)
J3: HALL, GND, VHIGH(12v), EDF, EDF_GND
J2: GND, DGB, V33
J1: FLT_COL, VHIGH(12v)
So What would you test? I only have one replacement NPN left.
Please don't let me break anything else, but if I can't fix it I'll be scavenging the board for my recumbent tricycles onboard!
Google turned up pure "Un-obtainium" for me when it sent me here last night, I think I'm moving in and camping on the front lawn.
http://forum.allaboutcircuits.com/showthread.php?t=21507
http://forum.allaboutcircuits.com/showthread.php?t=21511
Before I heat up the Iron.
Does anyone have any suggestions of things I should test?
My inclination is that the protection diode supplied and installed by the hoover contractor(cyntec) exceeded it's thermal dissipation, destroying its self and once it had "let out the magic smoke", the next usage caused the transistor to follow suit. It was brought up that this maybe in error and there might have been a short.
This is quite the fancy vacuum, it has a main motor current sensor(stall protection?), main motor temperture sensor (over heat protection), several smaller motors, one spins the hepa filter to clean it, one raises and lowers the the ride height, one engauges a roller bearing to tension/start/stop the beater/brush bar, and an unidentified sensor to detect "embedded dirt" (it was glued in behind some foam, possibly an impact/shock sensor). All controlled by a ZiLOG 20pin microcontroller (as of yet not properly identified). With an exposed debug port! Aside from being broken, my only complaint is it is a bagless which means it's a bit dirty inside the housing nothing some stratigicly placed weather stripping wouldn't fix I am sure..
It has six junction connectors, I haven't tracked down who(thats what wires) goes exactly where yet.
J6: GND, CHA_LOC, V33(3.3v), CHA_POS, CHA_COL
J5: TP1, GND
J4: GND, POWER_SW, HA_KNOB, V33(3.3v)
J3: HALL, GND, VHIGH(12v), EDF, EDF_GND
J2: GND, DGB, V33
J1: FLT_COL, VHIGH(12v)
So What would you test? I only have one replacement NPN left.
Please don't let me break anything else, but if I can't fix it I'll be scavenging the board for my recumbent tricycles onboard!
Google turned up pure "Un-obtainium" for me when it sent me here last night, I think I'm moving in and camping on the front lawn.