Hi there-just recently I have been having problems with my laptop, a Ibm T22. The spec is 900mhz processor, 256 memory, 20gb, in built sound, modem, graphics, also got a belkin 54g wireless card. The problem has been that after starting up, I get a lot of very loud feedback. I suspect that it has got something to do with the headphone socket, because once I put in a set of headphones, the feedback goes away.
Please!!! Has anyone got any ideas as to how to solve this?
In my experience of feedback it has nearly always been an earth problem. Either a dirty jack plug or dry solder joint that has caused it. Try cleaning the connections on the inside of the socket, if you can get to it. If you are using external speakers clean the jack plug if the interference still persists take the covers off the speakers and look for dull grey solder joints and if you are able, touch them with a soldering iron to remelt the solder which will create a better connection.
As far as I can work out,I cant get to the insides of the socket, am not using any external speakers. Also if that was the case of a bad earth, why does the feedback dissappear once I plug in the headphones? Have also tried it in different locations in both bedroom and front room. I plan on selling the laptop soon, so I would really appreciate the chance to solve this