求翻译：4.整組溫控器PCB共3片, 僅RV-0356 PCB為舊版本無生產週期, 且產品尚未使用過, 就出現需經一長時間使用後才會出現的X電容衰減現象問題, 研判應是PCB被更換過.是什么意思？

The entire group of thermostat total PCB 3 , only RV-0356 PCB for the old version without the production cycle, and the product has not been used before, after a prolonged use is subject to appear in the X capacitor attenuation phenomenon the question arises , judged

4. The entire group of temperature control PCB 3 pieces, only RV-0356 PCB is the old edition non-production cycle, and product has not used, X electric capacity attenuation problem that leaves to now need after a long time uses can have, the evaluation should be PCB is replaced.

4. entire groups warm control the PCB altogether 3 pieces, RV-0356 PCB is only the old edition non-production cycle, also the product not yet has used, leaves now needs X electric capacity attenuation question which only then can appear after a long time use, the evaluation should be PCB has been re

4. full set of temperature controller PCB total 3, only the RV-0356 PCB for older versions without the production cycle, and the product has not been used before, it appeared to be a long time before x capacitance attenuation problems can occur, analysis should be the PCB is replaced.

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