Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | KV25DXR | LOCKED IN WITH SERVICE READY READ OUT | Set was locked in with SERVICE READY read out on screen.Operation of service switch made no difference. Voltage and waveformanalysis did not help to isolate the problem to a particular component.I suspected the memory chip might be the cause so I replac | ||
Sony | KV25XBR | VERTICAL JITTER | Vertical jitter on satellite and prerecorded copy guardedtapes. | ||
Sony | KV25XBR | NO MANUAL CONTROL OF VOLUME | No manual control of volume, channel change. No data presenton common buss to these switches and Pin 11, IC1301. This line measured200 ohms to ground. | ||
Sony | KV25XBR | NO ON-SCREEN DISPLAY | At turn on set had display, but after a few min., displaywould go out. I had all correct inputs to display IC104 but no outputsafter warm up. | ||
Sony | KV25XBR | FLASHING IN RASTER | Set would have flashing in raster when it was cold. Aboutafter 20 minutes, flashing disappeared. By splaying coolant on componentsproblem was isolated to C1653. | ||
Sony | KV25XBR | VERTICAL FOLDOVER AT TOP OF SCREEN | Vertical foldover at top of screen with overscan. Foundslight distortion in waveform at DY-3 Pin 1. All voltages normal with theexception of collector of Q1507 being 40V instead of 62.4V as received. | ||
Sony | KV25XBR | NO POWER | Replaced Q1524, all waveforms looked normal. -HQ COMMENTS: Q1524 is pin drive transistor. | ||
Sony | KV25XBR | THESE UNITS HAD A VERTICAL JITTER ON A SATELLITE ANTENNA | When using these units on the satellite, they had a verticaljitter. I received four calls this week for this problem. Three wereKV-25XBR | ||
Sony | KV25XBR | HIGH PITCHED SQUEAL | Customer complained of high pitched squeal. He also told methat he hears the same noise from several XBR units and also competitionmodels also. I told him I would see what I could do to alleviate theproblem. Using my sniffer, a hose with a small trans | ||
Sony | KV25XBR | EXCESSIVE HV | The unit would go into HV shut down. We found after defeatingthe shut down circuit that the B+ was normal but that the HV was 35KV withno beam current/32KV max beam. We traced the problem to a defective C1664on the D board. This is the main tuning cap | ||
Sony | KV25VXR | NO FUNCTIONS | No audio, TV or VCR. | ||
Sony | KV25XBR | VERTICAL JITTER ON PAY-PER-VIEW CHANNEL | Customer in Chicago subscribing to Group W Cable set experi-ences vertical jitter and roll on Pay-Per-View channel only. All otherbroadcast and pay channels OK. -HQ COMMENTS: Pls compare composite video waveform at Pin 22/IC1501 forOK channels and the | ||
Sony | KV25XBR | PICTURE TOO WIDE | Picture about 3 too wide on each side. If size reduced withwidth control then pin cushion adjustments lost most of their control. | ||
Sony | KV25DXR | DARK PICTURE - NO COLOR SYNC | Set had very dark picture and no color sync. | ||
Sony | KV25DXR | BAR IN MIDDLE OF PICTURE, REPLACED IC502 AFC CONTROL | Ghost image overlays normal video on screen. Horizontalblanking bar appears in middle of pix. |