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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY SPP1010
Defective keypad - replace ic801 in handset, p/n 875932467 Not all keypad buttons on handset will function. afterverification that handset keyboard is good i checked the rows and columnlines from key board to main board. while checking corresponding caps andresistors connected to each column and row, found r828
SONY SPP1000
Dead handset due to dirty keypad - clean keypad Handset was dead. checked for bad connections, cracks, etc.after a bit of time, decided to clean rubber pad which appeared dusty.
SONY SPP1000
Line lock liine light goes on as soon as unit powers up Line relay energizes and line light goes on as soon as unit ispowered up. base of q401 was high.
SONY SPP1000
Crack on hand set mcb No dial tone, found hair line crack in cn901 area. itseems stress crack by mounting screw?sample forwarded. -hq comments: i examined the sample and i agree that it was caused bystress from the mounting screw. however it seems to be an isolated casec
SONY SPP1000
No handshake with base - clean corrosion on r511 and q601 Handset and base pass tests but would not lock with each other.
SONY CMH333
No power - resolder u1 in logic board The unit is dead. the unit will turn on if the logic pcb istwisted. i found the mpu ic u1 cold soldered.
SONY CMH333
Unit keeps turning on and off - replace q2, p/n 8-729-021-54 Unit keeps turning on and off. q2 current limiter transistoris shorted between collector and emitter.
SONY GVS50
Capstan runs real fast and lcd is not lit d/a conv ma137 As soon as you turn the power on, capstan will take thespeed if run real fast.
SONY GVS50
No picture on lcd, video out ok/ solder cn901 No picture on lcd screen but video out works fine. if tapon main board ma137 get picture intermittently, with ramdomly changingcharacters in osd running through lcd.
SONY TCWR531
No power - replaced ic801 Unit had no power, no b+ voltage to ic801 pin 24, voltagelost across r808. unsoldered pin 24 and voltage came up across r808.
SONY TAAX380
Intermittent function switching - resoldered cnp901, cnj901 Intermittently would not change functions.
SONY TAAV411
Unit has no audio - resoldered j501-6 ground No audio output. audio going into ic502 was ok but had nooutput. ic502 was extremely hot. found pin 11 of ic502 at -2.1 volts.traced to ic953 and found center pin (ground) on ic953 at 10 volts.
SONY STRGX800
Hum in both speakers, all modes - resoldered c963/965 Loud hum in both speakers in all modes. problem caused byc963 and c965 breaking loose from board. these capacitors are theprimary filters for +/-33 volt line to power amplifiers.
SONY STRD615
Dead - c211 shorting against jw350 Unit dead, no relay. found 5v stop line at zero volts.determined line was shorted on display pcb.
SONY STRD1015
No or very weak volume - resoldered rv502 No or very low volume, all modes may hear little volume nearmax on volume control.
SONY LBTG2000
Won't open Won't open.
SONY LBTG2000
No cd audio - replace k103 No cd audio with disc playing. found no audio from d-a converter, k103.
SONY LBTG2000
Tape player won't engage in play-remove excess glue from lever A tape deck would shut off immediately when play is pressed. found excess loc-tite had dripped down from azimuth screw #357, onto lever preventing it from alinging to enable play even with no tape mounted.
SONY LBTG2000
Unit stuck in tuner mode - replace ic1002 Unit would output only radio on cd or tuner and nothing in any other mode. found pions 9 & 10 on ic1002 switching values correct as the function switches were pressed, but ic not switching correctly.
SONY LBTG2000
No audio tape - reconnect cable from tape deck to main board Cable that leads from tape deck to main board was not connected.