22-09-2021, 06:59 AM
Hi.
I'm with Andy here. As a qualified TV engineer during our city and Guilds practical work the lecturer would repeat many times use your eyes ears and nose before applying power to any repair.
In the case of vintage repairs you have no idea, of what condition the item is in if you don't "look" first, often the smell of burning can remain for many years as can dampness, you may see snipped components, wires etc so look in the first instance.
Lamp limiters are a basic way of reducing available current to an item, they are far from perfect though. Start with a 25 watt bulb this reduces current considerably and gradually work up if the bulbs are very bright, stop and investigate. Look for shorted mains filter caps or other maladies. Use your nose for burning smells and look for wisps of smoke remember keep safe it's mains you are working with, the bulb should be in the live feed.
I'm with Andy here. As a qualified TV engineer during our city and Guilds practical work the lecturer would repeat many times use your eyes ears and nose before applying power to any repair.
In the case of vintage repairs you have no idea, of what condition the item is in if you don't "look" first, often the smell of burning can remain for many years as can dampness, you may see snipped components, wires etc so look in the first instance.
Lamp limiters are a basic way of reducing available current to an item, they are far from perfect though. Start with a 25 watt bulb this reduces current considerably and gradually work up if the bulbs are very bright, stop and investigate. Look for shorted mains filter caps or other maladies. Use your nose for burning smells and look for wisps of smoke remember keep safe it's mains you are working with, the bulb should be in the live feed.
