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Sony Repair Tips




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Search: sony
Results: 20072
Make Model Symptom Problem Solution By
SONY KV1770R
Flyback arcing The flyback burned a hole through the side and shorted outthe horiz. output transistor.
SONY KV1770R
H.v. shut down The unit would go into hv shutdown at approx. 100v appliedac. found r559/hold down to be cold soldered.
SONY STRVX550
Ic301 shut down The oscillator on ic301 was not running. we found pin 34 tobe low. this was caused by ic401/p19 staying high. ic401/remote decoderwas defective. -hq comments: actual power on is equivalent to conventional units whenyou press system power. then the s
SONY STRVX550
Dead - no display No display. no clock signal at pins 31 or 32 of ic301. hold(pin 34) of ic301 at 2.5v.
SONY STRVX350
No memory Unit would not retain memory when powered off. hold line was7v instead of 4.9v at ic301 pin 34. found q803 leaky.
SONY KV25XBR
No display Two problems: 1) volume changes activate rgb mode. found rgbbutton jammed closed. 2) no channel/function display. found l101 on thea board to be open. there is 5v active low info. present at ic104/p12.
SONY KV2680R
No sound/pix, cold solder on 12v rectifier d-506 This unit had no sound or picture.
SONY CFS88S
Audio from tape is distorted/low pitch The motor was running about 25% too slow.
SONY KV2675R
Horiz output transistor runs hot, replaced t-501 The horiz. output transistor ran hot on this unit.
SONY KV2680R
No audio, replace ic1107 and add capacitors/diode The customer informed me that just before the sound went bad,they heard a loud snapping noise. i feel when the set is new and thetube snaps during its breaks in period, causes the ic1107 to become defec-tive. -hq comments: to protect ic1107 from static
SONY KV2141R
Horizontal frequency of - high pitched squeal, solder l801 Horizontal frequency off produces high pitched squeal.
SONY D5
Sled moving to outer edge upon power up On power up sled moves to outer edge of disc. pin 68 tc201 isproper level. the only unusual signal is ic501 #23 which goes negative(5v). changed chips (ic801, ic501) no change. -hq comments: (found over the phone that disc did not rotate while sledmo
SONY TC44
Part number needed Need part number of gear (c) for tc-44. i have informed theservicer that the part may no longer be available. -hq comments: fortunately, the part is in stock at npc. part number is3-550-026-00.
SONY WMD6C
Motor does not turn The customer told me that he plugged in 12vdc instead of 6v.the amplifier section was fine, but the motor did not turn.
SONY CFS300
Part number incorrect - ic3 On page 18 and again on page 20, ic3 is stated to be a la4126.on page 29 of the parts list, it is a la4125t. which is correct? theseare not listed in the handbook as being interchangeable. -hq comments: the correct part is la4125t. part # is 8-759-80
SONY CCDV8
Tape jam Tape broken and wrapped around top of drum assembly.
SONY TCFX510R
Replacement of panel and buttons for rec and rec mute Servicer would like to replace panel and buttons for rec andrec mute however, these buttons are not shown separately on page 35 ofs/m. can we get these or do we have to replace entire front panel assy? -hq comments: the rec and rec mute buttons are par
SONY BMC110
Units dead Units doa. after making basic tests, found pin 38 (reset)held at 205 volts. syscon ic301 not able to reset. located leaky capaci-tor c341.
SONY XR70
Noise on the outputs in tape mode Every xr-70 i have worked on has a motor noise in tape modethat is noticeable at low or no volume. -hq comments: head amp may be picking up motor noise as they are locatedclose to each other. try a shield around the motor.
SONY TCFX1010
Communication with asp chip Always in muted mode. tape plays, meters correct. in recordmode there is no control of level (rec) even though the attenuator reads-70db. ic710/703/704/309 replaced. all power supplies were within 0.3v.