W
It’s the live feed to 130htz switch is variatting between 30 ohms and 35 ohms you need to negative feed it to the main motherboard setting required frequency to match the existing supply and check the earth 😉Plastering and waterproofing this morning.
View attachment 102518
Most of my afternoon was spent faultfinding this dimmer panel
View attachment 102517
You're not far wrong, turned out to be mouse damaged wiring and a couple of 20 year old capacitors that had dried out and failed. Parts to repair cost about a quid, labour bill was 5 hours.
Reply to the thread, titled "Random photo from your day" which is posted in Tilers Community on Electricians Forums.