Puntahan ko nga yung shop mamaya para papalitan
you can also do Yaqin a favor by emailing them, state model number, serial number of your unit.....
it would be interesting to hear what their fix is...
who knows they might even send you some replacement parts like some american companies do..
the important thing is to ask.....
i am sure that these complaint will not be the first one coming from you..
while i recommend replacement of selector switch, it is not a 100% cure...
go for the ceramic types, phenolic types such as those sold by deeco tends to harbor moisture...