Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | KV2602 | POSSIBLE MODIFICATION OF EXISTING CIRCUITRY | Picture brightness varies with program content/material(random intermittently). Maybe weak sync tips/levels (only on cablechannel 25 scrambled cable channel), request permission to modifycircuitry only if advised by engineering. Also magenta bar on the | ||
Sony | KV2602 | CABLE TV SCRAMBLING | Approx. 20 customers in St. Louis with KV-2602encing dark picture with color smear and predominant red chroma on cableTV. They were scrambling all channels. The system used is mfg by Jerroldand is similar if not the same as the equipment outlined in th | ||
Sony | KV2602 | POOR VERTICAL LOCK, R580 | With a change on screen from bright to dark would cause unitto loose vertical sync. With a bright scene no problem would be observed.Checking input/output of sync sep (Q507) transistor noticed that the syncwas lost when a low brightness scene was on scr | ||
Sony | KV2602 | BLOWS FUSE AT TURN ON, REPLACED THP601 AND FUSE | At turn on F601 fuse blows out. | ||
Sony | KV2602 | ONLY TUNES LOW CHANNELS, REPLACED NON SONY Q008 | VC voltage at tuner would only go up to 10VDC. | ||
Sony | KV2602 | VERTICAL DISTORTION, REPLACE C516 | This unit would play for approx. 20 minutes with no problem.After the circuit had sufficiently heated up the vertical would start tocollapse until there was only about 1/2 inches of deflection. We foundC516 to be defective. Monitoring the resistance ac | ||
Sony | KV2602 | AUDIO BUZZ ON SCRAMBLED STATIONS, ADJ SIF T204 AND T205 | Audio buzz on scrambled stations only (HBO & Cinemax). | ||
Sony | KV2602 | RETRACE LINES IN THE PICTURE, REPLACED L503 | Retrace lines in picture. | ||
Sony | KV2602 | INTERMITTENT SHUT DOWN, REPLACED CRACKED HVR BLOCK | This unit would intermittently shut down. The HVR block had acrack across the bottom. | ||
Sony | KV2602 | INTERMITTENT SHUT DOWN, REPLACED IC501, D501, Q501, T502 | Intermittently goes into HV shut down. Changed IC501, D501,Q501, T502. Also reduced the value of R572 to satisfy the adj. procedure. -HQ COMMENTS: Probably this type of shut down is caused by defective HVRblock. The 15.2 +/- 0.1V specified in adjustm | ||
Sony | KV2602 | PICTURE DISTORTION, REPLACED C508 | At turn on full vertical sweep then gradual loss from top andbottom until after 5 minutes picture would be approx. half size. | ||
Sony | KV2602 | PICTURE BLANKING, ADJ JERROLD CABLE BOX, VARI-LOSER | When using models with 30P chassis on cable systems thatscramble the pay channels (by removing the sync pulses at the head end andreinserting them thru a converter) the sync is sometimes compressed tooclose to blanking. This apparently reacts with the k | ||
Sony | KV2602 | DEAD, REPLACED Q601, D501, B RECT, ETC | Set dead. No sound, no picture. Found defective the follow-ing parts: bridge rect. power module, Q601 transistor, D501 zener diode,and 5 amp fuse. | ||
Sony | KV2602 | VERTICAL JITTER, REPLACED C511 | After 5 to 10 minutes on, vertical jitter is noticed andbecomes increasingly severe. Sometimes a brighter line is apparent acrosscenter of screen (slight folding). Found C511 2.2ufd at 20V tantalumcapacitor very slightly leaky (100k). | ||
Sony | KV2602 | VERTICAL FOLDOVER, REPLACED IC502 | Vertical foldover at bottom. All voltages around IC501 andIC502 checked good except Pin 5 of IC502 which was very low, waveformswere distorted. |