Garage Door Opener 4c repair


I have two Australian made ATA GDO -7V1 garage door openers. One day the light went on and off, but the mechanism would not work. It was repaired by ATA under warrantee by putting two SMD resistors of twice the value, piggy backed, to raise the rating of a failed SMD resistor. The solution was still under-rated for the load and eventually failed again.

ATA GDO 7V1

ATA GDO 7V1

To repair the second unit, I bought a broken one  on eBay very cheaply for parts. I thought it was a relay, but it turned out to be the same 330 ohn SMD resistor in all the failures.

When my second unit failed and we repaired it (my son did). with a tradiational 1/4 W resistor soldered to the appropriate pins on the other side of the board.

Here are some pictures of the failed part. It is almost hidden and labelled “R34”, but the picture shows its location.

Faulty board

Faulty board

The fix, with with a much higher rated 1/4 W,330 ohm traditional resistor soldered to the opposite side of the board. With this repair there have been no more failures.

CB 2 330

330 Ohm replacement on obverse

You can leave the unit in place to do the repair, saving time and effort. The circuit board is removed by taking the control panel off – 3 screws (two on the front and one underneath), and unplugging the two wiring harnesses.  The board itself it attached to the back of the control panel with  4 screws. If you did it every day, the whole repair could easily be done in 20 minutes.