Just wanted to say thank you and well done. As you were describing how to bypass the triac, it dawned on me how to completely eliminate the defective circuit board in my Fein vacuum.
So what does the microcontroller do when it sends current to the gate of the triac and the motor is already running. Furthermore what is the sense for that triac at all in the first place as all it does is cause problem. Also another question. Does a shorted triac behave the same as a triac that is not there like yours? Thanks for any feedback.
This is an LG 2000W vac, (actually seems to have been made by Miele for LG, or LG makes them for Miele since the board is exactly the same as the ones in Miele vacs. Some of these have a motor speed control, but this model doesn't. Supposedly the motor is very powerful and on start it has a large spike of inrush current, which can apparently cause a circuit breaker to trip, or possibly cause damage to the motor, so in this case this voltage regulation "Motor Soft Start" board uses a triac to smooth out the power consumption in some way. I guess it can also reduce sparking at the switch and extend the life of the switch. The triac is like a transistor in that the voltage on the gate regulates the voltage flowing between the A1 and A2 terminals. In this case the triac was removed, but I understand that in these applications, the triac can overheat and just open, not short out. All he did was simply bypass that whole board altogether and just essentially connected the motor directly to the mechanical switch. As you can see there is a transistor there, near this little 5 leg white IC, which is a TLP3052F (D4SCF) a Toshiba "Triac & SCR Output Optocouplers" so it probably isolates this control circuit from the line voltage. Maybe the circuit monitors the current drawn by the motor and if it goes up due to a full bag, it reduces the motor speed, or maybe even shuts the vacuum off to protect it. So most likely bypassing the board isn't the best idea, although, sure it gets the vacuum to run. I was able to identify this board as an ERB65238906 (also written on the board in a photo I found ERB652389, so it's modified a bit) The triac is an ST Microelectronics T1235H-6T "snubberless triac" which is the same used on some Miele vacuums as well. This is a board from 2014.
Just wanted to say thank you and well done. As you were describing how to bypass the triac, it dawned on me how to completely eliminate the defective circuit board in my Fein vacuum.
Great
My vaccum cleaner hoover works on minimum speed. Pl make a detail video how to fix it . Repair de triac circuit board . Thank you.
Ok I will try
So what does the microcontroller do when it sends current to the gate of the triac and the motor is already running. Furthermore what is the sense for that triac at all in the first place as all it does is cause problem.
Also another question. Does a shorted triac behave the same as a triac that is not there like yours?
Thanks for any feedback.
This is an LG 2000W vac, (actually seems to have been made by Miele for LG, or LG makes them for Miele since the board is exactly the same as the ones in Miele vacs. Some of these have a motor speed control, but this model doesn't. Supposedly the motor is very powerful and on start it has a large spike of inrush current, which can apparently cause a circuit breaker to trip, or possibly cause damage to the motor, so in this case this voltage regulation "Motor Soft Start" board uses a triac to smooth out the power consumption in some way. I guess it can also reduce sparking at the switch and extend the life of the switch. The triac is like a transistor in that the voltage on the gate regulates the voltage flowing between the A1 and A2 terminals. In this case the triac was removed, but I understand that in these applications, the triac can overheat and just open, not short out. All he did was simply bypass that whole board altogether and just essentially connected the motor directly to the mechanical switch.
As you can see there is a transistor there, near this little 5 leg white IC, which is a TLP3052F (D4SCF) a Toshiba "Triac & SCR Output Optocouplers" so it probably isolates this control circuit from the line voltage. Maybe the circuit monitors the current drawn by the motor and if it goes up due to a full bag, it reduces the motor speed, or maybe even shuts the vacuum off to protect it. So most likely bypassing the board isn't the best idea, although, sure it gets the vacuum to run.
I was able to identify this board as an ERB65238906 (also written on the board in a photo I found ERB652389, so it's modified a bit) The triac is an ST Microelectronics T1235H-6T "snubberless triac" which is the same used on some Miele vacuums as well. This is a board from 2014.
Dear Mr. Gichane.
Than you very much for perfect explanation. Works again. :)
Good job
Excellent video.
Thanks
Great video! Nice job! 👍
Thank you friend
thanks man
Awesome