Dicas Reparação
Modelo - Chassis KV27EXR15
Pesquisa: KV27EXR15 Enviar Dica Resolvida
Resultados 16
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV27EXR15 | PICTURE GETS DARK INTERMITTENTLY, RESOLDERED R-739 | Picture gets very dark intermittently. It shows color only. | ||
| Sony | KV27EXR15 | NO PICTURE AFTER REPLACING IC-102 (MEMORY CHIP), SEE SB 99 | After replacing IC-102 picture would blank. The same wouldoccur in the service mode. Thus, how do we adjust the unit if we can'tsee the adjustments? -HQ COMMENTS: Follow these simple steps: (Also see SB No. TVP0099).1. Before replacing IC-102, chart d | ||
| Sony | KV27EXR15 | NO POWER WITH REMOTE, REPLACED Q-604 | Unable to activate power using the remote. I was able to getmomentary power on via the manual power button. Observed the voltage atbase of Q-601 the relay driver and it went to 1.2 volts then dropped to .4volts. The OVP line was low at 1.4V instead of | ||
| Sony | KV27EXR15 | LOSS OF COLOR IN UPPER HALF OF PICTURE, REPLACE D-308 | Very intermittent (location G-13) there would be a loss ofcolor in upper half of picture, especially when program change occurred. | ||
| Sony | KV27EXR15 | DARK PICTURE, REPLACE Q-711 ON "C" BOARD | Unit had very low luminance chroma present and predominatelyred. Looked very much like a low screen voltage problem. Troubleshootingthe C board showed 200V on R, G and B output collectors. They werenot turned on. Found Q-711 Base at .22V and Emitter | ||
| Sony | KV27EXR15 | DOES NOT RETAIN, OR ERASE SOME MEMORY SETTINGS, ROM IC-102 | Channels 80 through 87 cannot be erased. Trapezoid lookingpicture and top screen sides reduced. When adjusting pincushion phase inservice mode, correction will be achieved but ROM won't retain new settingin memory when unit is unplugged. | ||
| Sony | KV27EXR15 | CRT BLINKS OFF WHEN SET IS WARM, REPLACE Q-711 ON "C" BOARD | Transistor leaky E-C. | ||
| Sony | KV27EXR15 | NO PICTURE/NO DISPLAY, REPLACE CRT | No picture and no display. Y/S inputs to IC-301 (pins 3 and 5ok). No RGB outputs. IC-301 pin 7 at 0.2vdc confirming IC-301 has pic-ture muted. G-2 voltage ok. IC-301 pins 19, 21, 23 all at 3.8vdc (shouldbe 4.2 - 7vdc), indicating missing cathode sam | ||
| Sony | KV27EXR15 | NO SOUND ON ONE CHANNEL, REPLACE C-466 | No Sound on one channel. Speaker actualy got hot from internalshort. Replaced the speaker and unit returned to normal. Several monthslater unit returned with the same exact problem however this time C-466was found shorted. -HQ COMMENTS: C-466 is the DC | ||
| Sony | KV27EXR15 | NO PICTURE SLEEP LIGHT ON, REPLACE C-500 | Set has high voltage. Sleep light is on, but set has nopicture. Found .7Vpp on pin 31 of IC-301 (should be 2 volts). ReplacedIC-500 and IC-301 still not working properly. Found shorted C-500. -HQ COMMENTS: When C-500 (on pin 1 of IC-500) shorts, ver | ||
| Sony | KV27EXR15 | BUZZING SOUND, REMOVED SHIELD ON T-602 | Buzzing noise coming from the set. Replaced T-602 stillbuzzes. Used RTV on the metal shield of T-602 - still buzzes. Removedmetal shield and customer is satisfied. -HQ COMMENTS: We will send your report to Tokyo. Please continue toreport to us infor | ||
| Sony | KV27EXR15 | NO SOUND - PICTURE OK, REPLACE IC-405 AND F-602 | No sound - picture is ok. The 22 volts is missing from pin 9of IC-405. | ||
| Sony | KV27EXR15 | NO SOUND, REPLACE IC-405 | No sound. Signal input to IC is ok however, there isno output. DC bias voltages are all near normal. | ||
| Sony | KV27EXR15 | HORIZONTAL LINES IN PICTURE, RESOLDER C-546 | Horizontal lines in picture sometimes on top sometimeson the bottom. Looks like retrace but in reality it is ringing. | ||
| Sony | KV27EXR15 | NO PICTURE, IK RELATED TROUBLESHOOTING | As you may have noticed, when servicing this and other unitsusing this particular IC-301, RGB lines at the IC level are blanked any-time the C board is disconnected. The main reason for this blanking isa cathode current detect line (IK). When the unit |