Symptom: after making a serious exchange of sound in the audio, you can boot correctly played, after reading voice is accompanied by sound Exchange, after up to 16 sound disappeared, down less than a minute and will appear.P5Lservice manual download site
Maintenance: observe the machine for simple models, compared with the previous MC-1400,P5Lservice manual download site
P5Lservice manual download site
Less has a amplifier host, but put amplifier circuit narrowed to right speaker within, open right speaker, amplifier using has IC TDA7650 do for Zoom devices, power with of is Exchange transformer, no see what place has burn paste or cracking of parts, measurement amplifier power voltage slightly low two or three v, analysis Exchange sound source, not play disc of when are has Exchange sound, description out in amplifier around circuit or power, with oscilloscope measurement plus or minus 20 v amplifier power, found inclusion with serious of Exchange ingredients, Display this is the capacitor is bad,P5Lservice manual download site
P5Lservice manual download site
Remove filter capacitor found out, has a serious leak. After changing the filter capacitor test machine noise is gone, play the disc back to maximum volume no longer protected. How the fault is caused by a bad filter capacitor, landscape maintenance of you washer and other appliances maintenance, each failure must be to find the root cause of failures is repaired.P5Lservice manual download site