First off, hello and greetings from Germany
I came across this site while searching for information about Delta-Q chargers.
I have a Delta-Q Quiq - 913-3600 - 36V charger for a golf cart here that, unfortunately, got hit by a lightning strike.
It killed two Schottky diodes, the isolating relay, and the resistor R9 next to it.
Since the resistor was unfortunately completely destroyed and neither the resistance value nor the color codes are readable,
can anyone here help me and tell me the Ohm-Value of resistor R9 next to relay K1?
Smps chip and circuitry are midle of daughter board. Almost impossible to remove. Not easy, but i have repaced the chip surgically, in place.
The start up resistor carries the load from input rectifiers, until charger boots and the real 5v supply fires up. The only protection if smps fails, iirc, is the resistor itself.
I just wanted to give feedback, that the charger is working again.
@Inwo, you were right—the ST Viper20a SMPS-chip on the logic board was faulty (MOSFET shorted). After replacing it with a new one, stable 12V output for the relais to switch and the charger sucessfully went through the startup cycle.
Since the VIPer has a built-in MosFet the chip gets really hot instantly.
I glued a small heatsink on it with thermal silicone to improve heat dissipation and since then everything is woking fine.
