SSR-80 DD твердотельное реле, ремонт и схема. Почему они часто ломаются?

This time I was sent a solid-state DC relay for repair. I repaired several of them and found a diagram for it. Behind the scenes, I looked at all the transient processes on an oscilloscope and was a little shocked. When applying a control voltage of 5 V to our relay, the rise time and opening of the transistor was approximately 700 μs and the closing time was more than 1.2 ms. So try to apply a control voltage of about 12 V, but with a 24 V control minus, the secondary part of the circuit may burn out and there will be a large control current. Now you can enjoy some tea and watch this video!)) Time codes: 00:00 - Introduction 01:40 - Check 04:35 - Disassembling the relay 09:08 - Consequences of overheating 11:12 - What's inside 12:30 - Checking after opening 13:21 - Start of repair 28:08 - Installing the transistor 31:00 - Strengthening the printed circuit tracks 34:26 - Checking after repair Alexander's channel -    / @alternativ-energy   Link to the diagram where I got it - https://imgur.com/r/electronics/gmf10NF Thermal paste - http://alii.pub/5pvlos Tin sucker - http://alii.pub/5pvltn Insulators from aluminum oxide - http://alii.pub/5pvm6o