CapXon caps in Akai LCT2701TD ps

[stevemedley]

A veteran TV tech had replied to a post -among many -for dead Akai sets with a flashing red LED where a green "ON" LED should be. Shooting from the hip, since he said that he had no manual, to check caps EC18-EC20, along with some surface-mount resistors and a zener. Lo and behold it was like deja-vu back to Radio-Electronics mag hexperts who used to amaze with down-to-the-component designators with just a symptom as a clue! I opened the power supply and there were three CapXon domes all in a row with those exact designators. I pulled the caps but haven't bought new (and better) ones yet. I am curious as to what a cap might take with it, typically.

[PlainBill]

Re: CapXon caps in Akai LCT2701TD ps

A veteran TV tech had replied to a post -among many -for dead Akai sets with a flashing red LED where a green "ON" LED should be. Shooting from the hip, since he said that he had no manual, to check caps EC18-EC20, along with some surface-mount resistors and a zener. Lo and behold it was like deja-vu back to Radio-Electronics mag hexperts who used to amaze with down-to-the-component designators with just a symptom as a clue! I opened the power supply and there were three CapXon domes all in a row with those exact designators. I pulled the caps but haven't bought new (and better) ones yet. I am curious as to what a cap might take with it, typically.

Typically nothing, but it depends on the location. Certainly check the other components he suggested. One real nasty effect we sometimes see is corrupted eeproms. If these contain firmware or vital configuration information it can be difficult to recover. This usually happens only if the caps on the particular board are bad. In the case of the Akai I'd replace any Capxon caps you find with Panasonic FM series. Even if they appear good, they have something in common with those that failed - limited life expectancy.

PlainBill