Let’s take the horizontal output transistor (HOT) as an example. One must always check corresponding components before replacing with a new transistor and turn it on.ĥ) Spilled liquid- Make sure the surrounding area of the transistor is clean and do not have any spilled liquid like coffee or cola.Ħ) A slightly higher voltage- If the transistor works on a slightly higher voltage than the transistor can handle, then it will slowly gets hot and have problem. The transistor could get hot and eventually burn.Ĥ) Bad corresponding components- This is very true especially if there is a component (usually capacitor and resistor) have problem causing the transistor to get hot and burn. The transistor back body had tiny leakage causing minor arc to the heatsink. A new transistor with fresh heat compound will usually solve the problem.ģ) Leakage- Although this is not so frequent, it did happened few times. Here are the reasons:ġ) The quality of the components- If it is not original then it could cause heating problemĢ) Heat compound dried up- Yes, sometimes when an equipment in service for a long time, the heat compound could get dry and this will cause the transfer of the heat from the transistor to the heatsink not to be so efficient. From experience I could only think of six reasons why a transistor could get hot and eventually burn.
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