(b) Procedures regarding default.-- . . . (3) If the issuing authority, senior judge or senior magisterial district judge determines that the defendant is without the financial means to pay the fine or costs immediately or in a single remittance, the issuing authority, senior judge or senior magisterial district judge may provide for payment in installments. In determining the appropriate installments, the issuing authority, senior judge or senior magisterial district judge shall consider the defendant's financial resources, the defendant's ability to make restitution and reparations and the nature of the burden the payment will impose on the defendant. If the defendant is in default of a payment or advises the issuing authority, senior judge or senior magisterial district judge that default is imminent, the issuing authority, senior judge or senior magisterial district judge may schedule a rehearing on the payment schedule. At the rehearing the defendant has the burden of proving changes of financial condition such that the defendant is without the means to meet the payment schedule. The issuing authority, senior judge or senior magisterial district judge may extend or accelerate the schedule, leave it unaltered or sentence the defendant to a period of community service as the issuing authority, senior judge or senior magisterial district judge finds to be just and practicable under the circumstances.