Dicas Reparação
Modelo - Chassis V25
Pesquisa: V25 Enviar Dica Resolvida
Resultados 289
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV25VXR | POWER | While researching the problem, it cannot turn unit on withremote or front panel. I discovered that power switch on front paneleffectively behaves as a master power switch. This is to allow timer RECfor VCR without turning on TV. This is not very well | ||
| Sony | KV25XBR | MISTAKE IN SERVICE MANUAL | Missing line in service manual on (D) board. -HQ COMMENTS: The line is missing connecting T-601/primary (downside) tojoint point of RL-601/C621. A service bulletin will be issued on this. | ||
| Sony | KV25DXR | DAMAGED c-570 ON (D) BOARD (JAIL BAR - ON LEFT SIDE SCREEN | Jail bar appears on the left side of screen. | ||
| Sony | KV25XBR | NO SOUND OR SOUND CRACKING | No sound or sound cracking on some channels. | ||
| Sony | KV25DXR | NO COLOR ON SCRAMBLED STATIONS ON CABLE | Problem on the Exeter Cable Co. Exeter, New Hampshire(continental). The unit had no color on 1 scrambled station and flashingcolor on the other. Found burst signal - measured 80mv on the stationthat was flashing and 50mv on the one with no color. All | ||
| Sony | KV25VXR | PART NUMBER FOR X202 ON (MV-7) BOARD | Need part number for X-202, MV-7 board. -HQ COMMENTS: Part number is 1-567-303-11 (10.7mHz crystal). A servicebulletin will be issued. | ||
| Sony | KV25DXR | UNIT WAS LOCKED IN SERVICE READY MODE | Locked in service ready mode. | ||
| Sony | KV25XBR | CHANGING CHANNEL BY ITSELF | Intermittent operation of customer controls due to warpedbezel. Second set with this problem one on pedestal base. | ||
| Sony | KV25DXR | ALL DISPLAYS APPEAR IN BLACK/HMH AND RGB BLANKOUT | All on screen displays ere black. HMH and RGB would blank outthe screen when they were selected. Found no output from IC306 - RGBoutput pins. Found no H.V. Blk. pulse on pins 8 and 9 going into IC306.Traced this back to (BD Board) output CKEY+UDHBLK. | ||
| Sony | KV25VXR | NO ON-SCREEN DISPLAY | No on-screen display in any function. Signals prevent at in-puts to IC-2001, but no outputs. Vertical pulse on pin 18, IC-2001 was1 VPP and 1-5VDC. By removing PPC-2 plug, display was on the screen. Isuspected D-2030 was causing the low pulse amplitu | ||
| Sony | KV25VXR | TIME ACTIVATED OPERATION MALFUNCTION | When the unit goes into RECORD PAUSE MODE, unit shuts itselfoff and memory gets wiped out. Found D602/5.6V zener) on (D) board de-fective causing no vertical pulse to PLL Contr. p4/IC103 and negativepulse at p58/IC2004 (Res. Out) at the REC. PAUSE insta | ||
| Sony | KV25XBR | INTERMITTENT VOLUME GOES HIGH | Trouble symptom was very intermittent, i.e., volume would govery high, brightness level would decrease about 2/3 and no display. In-spection reealed no DC voltage at IC-101 when problem occured. I foundrosin connection on L-113 which prevented DC from | ||
| Sony | KV25XBR | SCREEN HALF DARK | The left side of the screen was lighter than the right. Also,the video was smeared. We found the problem to be caused by C1658-it hasopened up. This capacitor filters the B+ to the RGB drivers. Replacementresolved the problem. -HQ COMMENTS: C1658 is | ||
| Sony | KV25XBR | VIDEO BLANKED OUT | By doing a voltage analysis on the D board, I was able totrace to Q1504 - E2.4, B.4, C.12.9, Q1506, E2.4, C.2.4, B.2.4 checkedtransistors they were ok. Checked surrounding components R1537 Changedvalue. | ||
| Sony | KV25VXR | NO VERTICAL SWEEP | No vertical sweep. |