HORMANN HSE 2-868-BS Gate Remote Control: Red LED Only After Battery Change

Question

Hello!
The HORMANN HSE-868-BS gate remote control does not work. After inserting a new battery, for about an hour it seems that the remote control is working because after pressing one or the other button the red LED lights up and in a moment the blue LED lights up. After an hour or so, only the red LED lights up. The remote probably discharges the battery, because when you press the button on the remote control, the remote starts with about 10 mA and then 25 mA.

Adamcyn · Answer

It's normal. It is important that without pressing it does not consume electricity.

2929 · Answer

Does not consume electricity without pressing.

Adamcyn · Answer

All right at the moment. Maybe you had a poor quality battery? Also read about setting and reset: Konstrukcje-montazu-eksploatacji-i-konserwacji/ This one?

2929 · Answer

The battery is new Energizer. Added after 6 [minutes]: Sorry, without pressing the remote control uses 100mA.

Adamcyn · Answer

So for repair. Can you take a good picture of the tile on both sides?

2929 · Answer

Tomorrow around 11 am I will take pictures. Added after 14 [hours] 12 [minutes]: Hello! I attach photos of the pilot. Added after 1 [minutes]: I'm sending photos

2929 · Answer

The first 6-pin circuit powered by a plus battery is marked D29. I don't know what this circuit is and whether you can buy it somewhere. Added after 4 [minutes]: Better photo

Adamcyn · Answer

Is this the case (SOT363)?

2929 · Answer

Yes, this is the case.

PROXIMA sj · Answer

The D29 is a pair of PNP and NPN digital transistors used to maintain power when a remote button is pressed - controlled by the processor. Datasheet in the attachment.
If the processor is damaged - it is the end of the remote control, if the SX 1230 transmitter it can be replaced.
How to check what is damaged?
Apply the voltage from the 3V power supply and see what starts to heat after a while - if you do not have a thermal imaging camera, and you certainly do not have one, use a small-angle pyrometer or just your finger and then your nose.
greetings
PROXYMILIAN

Adamcyn · Answer

Unfortunately not. Check the dimensions of the housing. We will be very grateful for the detailed description of the measurement methods you have provided.

PROXIMA sj · Answer

My colleague Adamcyn is not right about D29 - it is as I wrote.
I attach a photo of the housing and a fragment of the diagram.
As for the methodology of looking for damage, it seems clearly described - damaged elements that consume too much electricity - heat up.
greetings
PROXYMILIAN

Adamcyn · Answer

The author confirmed that it is the SOT363 housing. Please, measure the dimensions of the case. If it's SOT563, then they are as follows: During the search, I also stopped at the EMD29 - if not for this housing.

PROXIMA sj · Answer

Please, greetings PROXYMILIAN

Adamcyn · Answer

Thank you. Hit and sink Regards too.

2929 · Answer

After inserting a new battery, it seems that the remote control is working properly, it does not use any electricity in standby mode. I do not know if it will work on a new battery for a long time, but I resign from repairing and close the topic. Thank you all for your help.