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Sony Repair Tips




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Search: sony
Results: 20077
Make Model Symptom Problem Solution By
SONY TAE2000ESD
Unit pops at power off or switching power supply - repl q802,804 Speaker has pop noise when turned off or switching power supply.note: it happens when you turn the volume at least half. that's why icould not catch problem last time because i used low volume.
SONY TAAX411
No phono audio - repositioned an incorrectly installed ic501 No phono audio. when checking ic501, i noticedthat it was installed on the pc bd wrong from the factory. they missedby one pin hole towards the board screw hole (there is an extra pin hole).
SONY TAAV521
Ic304 pin guide is incorrect The schematic and the board pictorial show the notch on thisic corresponding to pin 1, this is incorrect for this particular ic.there are also two dot marks on the top surface, one on each corner 90degrees off from the notch. pin 1 is indicated by the s
SONY TAAV421
No remote operation, surround out, or vol led - ic952 bad No remote volume operation, not surround output, no volume knob led.
SONY TAAV421
No cd operation - replaced regulator ic953 and open resistrs No cd player operation replaced ic953 still no power or +10 v@ cp502 p6 further checking showed r962 & r963 open they are 2.2.
SONY STRVX550
Unit dead except for standby led - c824 open, replaced Unit dead except for standby lamp.
SONY STRVX3
No audio in fm mute - poor connection on asl pcb Fm functions fine in mono/mute off. but in fm stereo/mute onunit has no audio. if d006 the acute servo lock, green led does not lightthe stereo led d201 will not light and the mute circuit will not turn off. pin 5 ic201 controls this.
SONY STRGX9ES
Protection on, no output - replaced t601 Ic801 pin 6 has 16 v dc, pin 4 has 0 volt. ac voltage onda827 pin 1 had 0 volt ac. open transformer t601 at vh2. unit inprotection mode. relay ry581 doesn't kick in.
SONY STRGX909ES
Dead - replaced outputs Found q705 and q708 shorted and fuses blown. q705 had solderball on the emitter touching the heat sink.
SONY STRGX808ES
Balance control not operating correctly - resolder cnp1607 When balance control is turned all the way to the left, audiois off in both channels and when the control is turned all the way to theright audio is heard in both channels.
SONY STRG1ES
Glitches and noise in osd - ground pins on ic128 Dealer display model out of the box had on screen displayproblems. when turned on it would get 1/2 screen of b/w noise, thenslowly develop full screen menu but with large yellow blanked area. thenoccasional square black pac-man shapes would appear acros
SONY STRD915
Memory preset 1, direct, & tape buttons won't function The memory preset, direct, and tape function buttons areinoperable.
SONY STRD790
Unit dead. would not power up - replaced q755 and q756 Unit would not power up. both q756 and 755 wereshorted.
SONY STRD790
Dead - resoldered surround outputs and repl fuse. Fuse blown, outputs ok. surround output ic had ring cracks.
SONY STRD611
Wrong main board and display board Front panel is strd611, but inside main board and displayboard belongs to strd511. unit has wrong pc boards installed.
SONY STRD611
No output/no sound - replaced ry701 Open ry701 (relay open coil). there is no sound at the outputto speaker.
SONY STRD611
Blown outputs - replaced outputs and fuse Found left outputs shorted and fuse opened.
SONY STRD611
Protection immediately at power on - ic601 defective Unit goes into protection immediately at power on.ic601 pin 1&2 should be at 0v, but i measured -21v.
SONY STRD515
Constant 6khz tone thru out unit - ic802 defective A 6khz tone was constantly heard in the speakers with itslevel variable by the volume control. the oscilloscope showed its presencealmost everywhere you looked in the unit, including the ground lines.
SONY STRD511
No output from main speakers - q714 shorted Q714 on main board shorted. ry701 relay is not engaged.no audio output.