Hi I've got an Acer AL2021 monitor (1600x1200 resolution) that's starting to give me issues. The screen randomly dims, and then brightens up. It does this from switch on. From what I've read about this I'm pretty sure it's a capacitor issue and not a tube/inverter problem. Upon opening the case and removing some metal EMC covers, there are certainly 4 blown aluminium electrolytic caps. I will replace these, no problem. But my question is more about something else. The main board has a large chip with heatsink. The service manual does not show the heatsink which is simply glued on. Again, not an issue. But inside the EMC cover there is an orange foam square which contacts the heatsink when assembled. My immediate thought was that this was a thermal gap pad to conduct more heat from the chip. However, it feels warm to the touch and not cool/cold as the metal cover is. This is the bit that I don't understand. What is this foam pad for?
- posted
11 years ago