Sony TV Repair: Common Faults and Solutions.
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Results: 20067
Results: 20067
Sony Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | KP5000 | Color distortion | This unit would change the width of the green raster by twoinches when going from min to max brightness. the unit would alsoconverge ok on internal generator and then when it went back to video, theunit would be misconverged but would still check ok on | ||
| SONY | KX2501 | Dead, replaced q651 and q653 | Unit came in with q652 shorted and seven amp fuse blown.found that excessive current drawn beyond 65v ac when variable inputtransformer turned up. this was with b+ unloaded from power circuit.individual measurement of power supply components showed both | ||
| SONY | KX2501 | Lines across screen top and bottom, normal (support wire) | When viewing monitor with no video there are faint whitevertical lines across the screen. this appears to be horiz. pulsespossibly from the scan derived b+ voltages. customer noticed these whilerecording with camera and became very critical. he insist | ||
| SONY | KV8000 | Shut down | Set works fine for an hour or so then goes dead. will comeback on and repeat. | ||
| SONY | KV2650R | No operation, replaced d021 | Unit cannot be turned off except by master switch, no functionon any mode, i.e. power on/off volume up/down, channel up/down, pictureup/down etc. voltage on pin 2 on ic001 was high (4.8v). found d021leaky (500k). | ||
| SONY | KV2648R | Snow picture, r557 changed value | The picture exhibited light snow on all channels all thetime the unit was on. after 5 to 10 minute warm up the picture shrankabout 2 inches vertically. | ||
| SONY | KV2648R | No tuning operation, replace prescaler | This set would not tune in any channel when the tune-upbutton was pressed. the tune-down button would work fine. all channelwere tuned in. | ||
| SONY | KV2648R | No picture, replaced q602 and q603 | It first appeared as if q602 shorted and that replacementwould solve the problem. however after about one hour it would shortout again. q603 was discovered to have e-b leakage. | ||
| SONY | KV2647R | No operation, replace ic-502 | Set would not come on, no sound or picture. found ic501loading down vcc on chip to 2vdc, should be 12.5vdc. | ||
| SONY | KV2647R | Incorrect tuning, resolder r-085 | When unit turned on, it would come on with different channel. | ||
| SONY | KV2647R | Faint lines on the screen | Faint lines on left side of picture. these are vertical linesspaced about one inch apart. they vary in thickness from one eighth inchto nothing as they approach the center of the screen. -hq comments: slight ringing (vertical bars) visible on low brig | ||
| SONY | KV2145R | No picture, resolder c534 | Set would blow the horiz. output, at low voltage. i noticedh. frequency doubled. found c534 not grounded. | ||
| SONY | KV1948R | Picture distortion (slight tear), normal | A slight horiz. band/pull under conditions of varying beamcurrent. scene changes or large areas of light next to dark. this bend/pull is very slight and i have observed the same symptom on otherkv-1948r models. we have given careful attention to the b | ||
| SONY | KV1947R | Poor remote operation, replaced ic101 | Intermittent (2-3 weeks) operation in remote and push-buttonfailure. | ||
| SONY | KV1947R | No vhf, replace ic002 | Set had uhf operation but no vhf operation. no vc was presenton tuner. all switching voltages were correct and verified against akv-1948r. applying external dc to vc line tuned all stations. | ||
| SONY | KX1901 | Lighter raster on the top | These units had a light area across the top of the screen.the first 12 to 15 scan lines after vertical blanking were lighter thanthe remainder of the raster. it looks like the units had a poor blacklevel just after vert. blanking. also these units have | ||
| SONY | KV1222R | Incorrect mechanical operation | The door assy will not stay closed due to the fact that thedoor retainer which is a plastic material, will not engage the catch onthe door securely in order to keep the door closed. this condition isprevalent on at least a dozen sets or more at the acco | ||
| SONY | KV1221R | Shut down, replaced r001 | After warm-up (or after simply plugging in and not turningon for 1/2 hour or so), the unit could not be powered up. if unit ison, it will then not turn off. remote or manual same. ic001 was bad andthe relay drive transistor as originally suspected. | ||
| SONY | KV1215 | Dead, replaced l309 | While i was servicing the unit using an external dc powersupply, i noticed the absence of audio. inspection revealed no 18vbeing supplied to the sc board. resistance of 18v line to groundmeasured about 1kΩ, should be about 180Ω. i then found l | ||
| SONY | KV1207 | Dead | 12v line was being grounded by r221 lead touching ground. |