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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CPD1302 | vertical SYNC PROBLEM | Unit came from independent service shop, they replaced IC-301on BA Brd and IC-206 on BD Brd. The vertical sync problem was notsolved (since they could not identify problem, unit was sent to us).Checked vertical sync at pin 9 on IC-206, ok. Checked pin | ||
| Sony | KV27FX10 | INTERMITTENT LOSS OF vertical DEFLECTION | Unit would intermittently manifest reduced vertical deflectionand foldover. After a while, it would lose vertical deflection altogetherwith a bright horizontal line showing at the center of the screen. Tracedproblem to bad solder connection between DY | ||
| Sony | KPR46CX10 | vertical SWEEP COLLAPSE, REPLACED Q-403, 404, AND 405 | Failure caused CRT Permanent damage (Red CRT). | ||
| Sony | KV27FX10 | INTERMITTENT vertical PICTURE DISTORTION | Intermittently, the unit would have a distorted picture.This distortion appeared on the top 25% and lower 5% of the picture area.It looked as if the top 25% of the picture would be stretched for a periodof time then, it would return to normal. The stran | ||
| Sony | SLHF900 | INTERMITTENT CHROMA LOCK FLOATING vertical COLOR BARS | In playback unit manifested vertical colored bars in picture.The actual video in the background was uncolored. Traced problem to anunlocked VCO on the VI-10 board. Tried adjusting RV-403, but noticed itwas erratic and the setting would drift with time | ||
| Sony | KV20TS30 | UNIT IN SLEEP MODE AS RESULT OF NO vertical DEFLECTION | Unit in sleep mode as a result of no vertical deflection.There is a squeal present as if the horizontal frequency was off. Scopingpin 22 of IC-301 showed no VD pulse. | ||
| Sony | KV32XBR15 | NO vertical SWEEP MICRO LOCKED UP, P-14/PIN 1&2 SOLDER SHORT | No vertical sweep or any control over functions. There was novertical drive, pin 31, IC-301. The DC voltages on data and clock lines,pins 47 and 48, IC-301, were present. Date and clock pulses were alsopresent. A resistance check between pins 47 and | ||
| Sony | KV27XBR10 | NO vertical SWEEP, REPLACED IC-1303 | No vertical sweep or any functions except a narrow horizontalline on the screen. The vertical osc. waveform, IC-301/pin 34 was good.There was no vertical drive, IC-301/pin 31. The DC voltage on pin 47 and48, the data and clock line measured only 1-2 vd | ||
| Sony | KV19TR10 | vertical FOLDOVER ON TOP OF PICTURE WHEN COLD, LEAKY C-534 | When unit is first turned on, unit has foldover on top ofpicture. Once it warms up, it disappears. | ||
| Sony | KV27XBR15 | NO vertical, REPLACED IC-1301 | No vertical. Everything checked ok. | ||
| Sony | KV25DXR | NO vertical DEFLECTION | No vertical deflection. Caused by Q-2030 failing to pullreset line to its normal high. Note: Schematic error page 55 (J-7).D-2056 should be connected at the junction of R-2198 and R-2199. It willnot operate as drawn. | ||
| Sony | KV2782ME7 | vertical ROLLING, REPLACE C-1001 AND REROUTING OF CABLE | The vertical rolling was affecting EXT video in and internallygenerated video. Problem 1: The EXT video rolling was caused by theshielded cable carrying comp. video linking connectors A-10 and D3 to thesync sep. routed too close to the flyback. Problem | ||
| Sony | CVM1900 | VERY WEAK vertical HOLD | Very weak vertical hold and appeared to also have a horizontalsynch problem (another shop replaced IC-501, problem not solved). Spenttime checking DC voltages, waveforms around IC-501, checked ok. Lookedcarefully at waveform on pin 24 of IC-501, vertic | ||
| Sony | KV32HSR10 | vertical LINES IN PICTURE, SERVICE MODE ADJ "REF" SET TO 1 | Three to four retrace lines are visible at the top of thescreen. They do not look like ordinary retrace lines, but are of solidred, blue, or green colors. | ||
| Sony | KV32XBR65 | vertical LINES IN PICTURE, REF MIS ADJ, ALSO CHECK R-517 | Three to four retrace lines are visible at the top of thescreen. They do not look like ordinary retrace lines, but are of solidred, blue, or green colors. |