Re: Help with Motor Control Board
Are you getting 160VDC at the two legs of those two main filter caps?
Are you getting 160VDC at the two legs of those two main filter caps?
-
Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Help with Motor Control Board
I did the same with the relay and got these results if it means anything.
Leg 2-3 = 1.435
Leg 2-4 = 1.710
Leg 2-5 = 1.790
Leg 3-2 = 1.419
Leg 3-4 = .961
Leg 3-5 = 1.239
Leg 4-2 and 4-3 = nothing
Leg 4-5 = .565
Leg 5-2 and 5-3 = nothing
Leg 5-4 = .509Comment
-
Re: Help with Motor Control Board
Can I test them without power to the board? When I do I only get .30vComment
-
Re: Help with Motor Control Board
Ok when you say nothing do you mean the same as touching the probes together 0.00 or perhaps a single 0 on the left of the meter screen? ( or OL -something meaning off scale or overscale)
I think these are the points to check the relay - you apply the voltage
to points R1 and R2 and take an ohms reading on AC1 to AC2 - should go from
open offscale or OL to 0.00 or close to
Perhaps wait for budm to comment as he did mention a zener in parallel and I dont know if he meant care as the reading wouldnt work or CARE as in damaging the diodeAttached FilesPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
-
Re: Help with Motor Control Board
If I hooked the power up to the board and powered it on would it do any damage to it since the heat sink would not be hooked up?Comment
-
Re: Help with Motor Control Board
I have a cheaper DMM it doesn't give you OL. In diode mode it starts at 1. and if no reading it stays that way, if I get a reading the .1 disappears and get a reading.
Been searching for a cheap used FLuke but can't find one.Last edited by Crrose; 01-09-2015, 03:50 PM.Comment
-
Re: Help with Motor Control Board
Sorry I meant the nothing in ohms mode post10
No you cant apply mains power without the heatsinks and no you cant test the big caps without powering up
In pictures on the net of these boards they have the heatsink part attached
can you do that or is yours attached to the frame? or wont the cables reach?
As mentioned before an alternative would be to solder wires to the caps.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: Help with Motor Control Board
Just reread post 10 and your comments on your meter if I have the test points correct I think that means the bridge is okPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: Help with Motor Control Board
Ok if I put my battery to RLY1 and RLY2 and test ohm at AC1 and AC2 I get no reading. If on diode mode its 1.452Comment
-
Re: Help with Motor Control Board
Dont suppose you heard it click? - what polarity did you use battery plus to ???
I meant you to wait until budm came back on to check about the diode.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: Help with Motor Control Board
I can't hook up my board to the heat sink without attaching it to the mounting frame. Once it is attached to the mounting frame there is no access to the bottom of the board. I guess I could try to solder some wire to the bottom of the caps and hook it back up. Does it matter the size of wire?
No click to relay but I was only using an 18v battery so may not be enough power.Comment
-
Re: Help with Motor Control Board
I just realized my mower is 24v I'll try to get relay to click with it.Comment
-
Re: Help with Motor Control Board
I hooked by mower battery up and the relay opens and closes. Tested the Ohms and get .6 when set at 200ohms.Comment
-
Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: Help with Motor Control Board
Ok I have some 18/2 lamp wire I can use.Comment
-
Re: Help with Motor Control Board
Heat is only needed when the motor is running and since the motor is not working you do not have to worry about heating up the bridge rectifier or the power MOSFET.
We need to know if the main caps on the motor driver board has Voltage on the main cap or not. The relay looks to be for soft-start circuit.
The MOSFET is connected in series with the motor and it is driven by PWM signal to the Gate.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Help with Motor Control Board
I just soldered wires to the large caps. When I turn the power on do I test them individually or hook both + to + and - to - ?. Everything is hooked back and put together like it is supposed to be.Comment
-
Re: Help with Motor Control Board
I thought I would try each individually since it couldn't hurt. I get 166.6 on the one closest to the relay and -49 on the other.
I can also hear the relay clicking on and off which it wasn't doing before.Last edited by Crrose; 01-09-2015, 05:30 PM.Comment
-
Re: Help with Motor Control Board
166VDC is fine and that is what I expected. I am still wondering about the solder joints on those two Zener diodes that the pads look to be damaged and you were getting 6.6V and then 15V, there may be bad joints on the board.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Help with Motor Control Board
Just tested again. 15.2 and 24.7 on the diodes and relay clicking now, however I am only getting .87VDC on the red/black wires and 0 black/white wires on the speed control. Should be 5v red/black and 0-5 on black/white wires.
But what about the -49 on the other filter. Actually I may have marked wire wrong, switched probes and get 49.Last edited by Crrose; 01-09-2015, 06:27 PM.Comment
-
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Hi all, I just want to share the repair of my 60PK550-UA TV set.
The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.
But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.
All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
C57: 3.30V
C61:...07-20-2023, 12:38 AM -
I have a motor control board I am trying to repair. I've been told the motor is fine, but the control board will only make the motor go one direction but not the other. Power comes in through a linear transformer and then a rectifier bridge and then filter caps. No schematics for the board. Relays on the board are 24V so I started by setting my bench PSU to 24V and injecting voltage. There are several LEDs. All but one LED lights up. There are test points labelled +15V, 0V and -15V. When checking voltage potential between +15V and 0V, I get a perfect 15V. For -15V to 0V, my meter shows approximately... -
Hi,
I am looking for this Treadmill Motor Control Board 032669-IF schematic or how to fix it myself if someone can guide me and let me know what parts to change...
I hope someone can help!
Thanks.
Comment