UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Alpine 7148L Car Stereo digital Tuning Fault

'LIVEWIRE?' · 14th Mar 2009, 11:48 pm

Having rechecked around the 4.5MHz Crystal, I decided to replace the two 22pf capacitors associated with it, plus a decoupling capacitor on an adjacent line. Hey Presto! The radio now works fine on all 3 wavebands, although there are intermittent problems with the 'Tact' switches used for station selection, etc. Changing them is gonna be a fiddly job, but one that must be done for the sake of reliability. I should, however, have checked those 22pfs sooner. Only being repairing radios for 37 years, that's all!!!

14th Mar 2009, 11:48 pm	#10
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Alpine 7148L Car Stereo digital Tuning Fault Having rechecked around the 4.5MHz Crystal, I decided to replace the two 22pf capacitors associated with it, plus a decoupling capacitor on an adjacent line. Hey Presto! The radio now works fine on all 3 wavebands, although there are intermittent problems with the 'Tact' switches used for station selection, etc. Changing them is gonna be a fiddly job, but one that must be done for the sake of reliability. I should, however, have checked those 22pfs sooner. Only being repairing radios for 37 years, that's all!!!