BeginusElectricus
Newbie level 5
Hi guys, I bought broken philips pm3231 scope (just for fun, and trying repair them with your help) I try to figure out what is wrong but I defeated with it, I have measured voltages with service & manual pdf and that I have found is : voltages in power supply are little low than should be, I found one strange thing - there is a neon indicator (b401) za1004 (this is some stabiliser or? ) and... this indicator is lighting when power is on (I red that it shouldn't be light when all is good) and I can hear silent "squeak" and voltages are dropping down but when I unplugged -1100v cable from this neon indicator - all voltages are correct, Do you have some advice for me what should I do to repair it? thanks a lot.