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Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SONYCCDTR5
Distorted picture - loss of syncUnit had distorded picture and loss of sync that looked some-what like one head clogged. had poor playback y+c at ic-203, pin 56.had good playback y at ic-203, pin 23.
SONYCDPC70
Drawer does not openDrawer would not open. tray would rotate within the unitevery time open button was pushed. sw-103 (drawer-in switch) was jammedin and would not open up due to a crack in the moveable part of theswitch. this fooled system control into thinking drawer w
SONYSTRGX9ES
Part number for front panel metal bezelNeed part number for metal bezel as soon as possible. there is no part number listed in the service manual. -hq comments: metal bezel section of the front panel is not available asa separate part.
SONYKV32HSR10
Weak, blurry - red picture overall, c-302 "a" boardPicture significantly darker, blurry and mostly red in color.all crt operating voltages, are ok. internal tech. adj., from remote ctl.are all at normal settings and readj. from settings has no effect.
SONYM88V
Incorrect part number - s102 tape speed switchPart number 1-571-506-21 is an incorrect part number.
SONYM1000
Different servo boardThe above unit has a servo board that is different from theone in the schematic. the board contains an ic instead of the discretetransistor. can you supply any information about this? -hq comments: the servo pcb and the motor are available under one p
SONYCCDV110
No video 5v from dc to dc converterNo video 5v from dc to dc converter. this 5vdc line measuredabout 20Ω to ground. c-208 was shorted.
SONYKV27XBR50
Yoke squeal, replace with p/n 1-451-275-41 tvp sb # 114Squealing yoke.
SONYSTR313
Distorted audio on one channel & ic gets hot.Original 8-759-301-25 replaced by 9-919-580-00. right sideworks with some static. left side is dead. ic gets very hot. it wasreported this replacement had problems in other models. -hq comments: refer to hifi s/b no. 0116. as the si-1125hd has been
SONYSLHF600
Playback speed is too fastThis problem may be intermittent. when playback mode isactivated, caused by item 182 u end not catching a plastic pin at thebottom part of t.u. sensor. this pin is subject to wear from normalusage. the sensor does not move to the proper position for t
SONYSPP110
Incorrect part numberThe service manual part list indicates ic-207 as part number,8-759-205-06 description tc74hc74f. this is incorrect, ic-207 is partnumber, 8-759-205-41 description tc74hc4066f substituted by part number,8-759-239-25 description tc74hc4066af. refer to se
SONYMDP210
No operationUnit would not play laser discs. found all ld adjustmentsoff. aligned and tested unit. discs played correctly but picture had nocolor.
SONYCCDTR5
Incorrect part number (ic 503)Part number should be 8-752-031-01. see page 234 of theservice manual. -hq comments: the correct part number for ic-503 on the vc-60 board is8-752-031-01.
SONYSLV70HF
Noisy picture ep mode onlyHead output is very low, noisy ep picture.
SONYCFS903
Keypad (rubber cover) breaks (tears) easily and prematurelySample forwarded for evaluation and pad replaced. a monthlater it had to be replaced again due to breakage. the customer claims noabuse. -hq comments: please reorder the md button packing using the partnumber for the new improved part. the material c
SONYD2
Replacement assembly idle gear bindsReplacement assembly idle gear binds. getting several re-calls in service center. i am enclosing sample unit. this unit binds andskips intermittently. motor assembly has been replaced in unit. -hq comments: due to design limitations, cost and part s
SONYKV2681R
Ic-301 chip substitution, cx-20129 to cx-20193The original ic-301: cx20129, part number 8-752-012-90 wastemporarily not available. tried using cx20193 but picture was rollingvertically. can this chip be used as a substitute? references: seeservice bulletin ctv0236 and 24. -hq comments: when usin
SONYCCDSP7
No vtr functionsFound no vtr functions after loading of tape. unit doeseject and works fine in camera mode. unit acts like it is in offposition.
SONYFD500
Dead - ic-451 loaded (sound output ic)Unit arrived dead. found fuse (f-602) blown. checked andfound ic-451 with a chipped-off body. found this problem very common forfd-500. this unit had previous problem of a blown ic-451. prematurefailure of ic-451 and f-602 is too high.
SONYDT2
Production change in spindle motor assemblyI have noticed that newer models have new motor assemblies(x-264-153-72) installed from manufacturer. they also have a new md cover(ref. no. 73) with a different finish. do models with new md covers allhave new motor assemblies? or do you have a list