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Zelfde probleem hier. Enexis gebied. Lokale uitlezing (Domoticz) en SlimmemeterPortaal beide geen gas gegevens (0.0). Elektra OK in beide gevallen.

@ Schelte. Sorry for the technical explanation: BC5xx specs do show a VBE0 voltage of 5v (applicable to wrong Q5). For Q4, exchanging an npn transistor with an pnp transistor will give you a max VCB voltage of 0.7v (diode voltage). In case of Q4/Q5 mix-up, together this will result in a kind of zene...

@ Schelte Sorry for my delay in reaction. Received one unit which did have the mix-up of Q4 and Q5. In practice it did result in a low 24v (think around 18v) and a too high voltage on pin 14 of IC1. After removing the voltage stab (IC3), I still did have the high voltage on pin 14 (without IC1 insta...

Investigated this problem somewhat more. Can it be that you mixed Q4 and Q5 (BC548 versus BC558)? You easy can make this mistake mainly due to the PCB layout. It will result in a too high +5 voltage behind the 7805 stabilizer. In case of mix-up: exchange Q4 and Q5 with new transistors of the same ty...

Investigated this situation somewhat more. Can it be that you mixed Q4 and Q5 (BC548 versus BC558)? You easy can make this mistake due to the PCB layout. Potentially you also will detect a too high +5 voltage, thinking the 7805 regulator is defective. In case of mix-up of Q4/Q5: replace both transis...