Sounds like a flaw in manufacturing of the filters. They could have been contaminated before sealing or the seals failed in service. Might be a good idea to keep a few on hand in a vacuumed sealed container. A good question to ask the customer is if the radio is used or stored in a damp and or humid environment.
![เบิ้ล ปทุมราช - อ้ายกินดอง น้องลาบงัว ft. สแน็ก อัจฉรีย์ [OFFICIAL MV]](http://i.ytimg.com/vi/-OK--KaSPcI/mqdefault.jpg)
Good Video - Thanks for sharing !!
Always a good day when you can learn something.
Sounds like a flaw in manufacturing of the filters. They could have been contaminated before sealing or the seals failed in service. Might be a good idea to keep a few on hand in a vacuumed sealed container. A good question to ask the customer is if the radio is used or stored in a damp and or humid environment.
Do you have trouble sourcing ceramic filters? Are they OEM form yeasu ?