Cigarette Lighter Socket Not Working (how to fix?)

[frake]

have you tried spraying contact cleaner/wd40 sa socket baka kasi marumi lang dahil sa carbon & some rusts sa loob?
ganyan ginawa ko kasi late last year, namamatay kasi ang volt meter ko. after spraying kasi nawala ang problema.

Hi sir, many thanks for your reply. Diko pa po na-try mag spray ng wd40, pero malinis naman po yung socket and yung mismong ini-insert na lighter.

Gaano po karami ang amount ng i-spray, sir? or should i use a cloth or rug?

Thank you po.