I'm not trying to be insulting or anything, we all don't know everything and it's ok to be wrong or not understand something. This is more out of concern for your safety and the fact you are asking the question you are.
DO NOT place any material inside the unit. You can and likely will start an electrical fire. More importantly, unless you have training and strong knowledge, you should not even open the unit and touch anything. Some electrical devices can hold a deadly charge even if unplugged for many hours. As an example, look up CRT tube anodes.
When in doubt about potentially dangerous things, whether it's risk to the equipment or especially yourself, find a professional. Being humble is better than being dead.
DO NOT place any material inside the unit. You can and likely will start an electrical fire. More importantly, unless you have training and strong knowledge, you should not even open the unit and touch anything. Some electrical devices can hold a deadly charge even if unplugged for many hours. As an example, look up CRT tube anodes.
When in doubt about potentially dangerous things, whether it's risk to the equipment or especially yourself, find a professional. Being humble is better than being dead.