Sony Repair Tips
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Results: 20088
Results: 20088
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| SONY |
BE4A CHASSIS
|
Frame collapse. replaced frame output chip, but picture geometry was not ok. the voltage at pin 8 of mc44007p chip measured low. | If picture geometry after replacing vertical outp. chip is not in order, replace also mc44007p. (replaced also str-s5706 in case an overvoltage caused the fault) | ||
| SONY |
BE4A
|
Field collapse with visible line | Stv9379 fop ic & 24v fusible next to loptx | ||
| SONY |
BE4A
|
Dead - st/by led flashes 4 times (no lop) | No line drive from ic301 mc44007p - chip u/s | ||
| SONY |
BE4A
|
Dead - cp602 on sec psu o/c | Replacement cures fault only temp - cp602 to n75 (2.5a); add 5v6 zener between pins 1 & 9 ic803, add 5v6 zener between pins 9 & chassis on print side of pcb | ||
| SONY |
BE4A
|
Dead - 6 blinks from led | Overvolts or current indicated - check ht (118v) - use dummy load; c608 10µ, c620 100µ 160v, strs5706 poss & loptx | ||
| SONY |
BE4/4A
|
Tripping with 6 flashes from led & rush of eht | Loptx - eht sect faulty | ||
| SONY |
BE4 KVM2171U
|
Dead after half an hour | Strs5706 ic601 | ||
| SONY |
BE4 KV21T3U
|
Int dead | R607 0r56 2 watts had risen in value to nearly 2 Ω | ||
| SONY |
BE4 KV21M3U
|
Field collapse | R814 0r47 in 24v supply o/c - use proper improved sony type | ||
| SONY |
BE-4 KV16WT1U
|
Frame collapse (no picture) | R814 0.46r 0.5w (121781111) o/c, ic501 tda9302, c504 100uf 50v, also replace d501 rgp10gp (871930243) or may fail again | ||
| SONY |
BE-4 KV16WT1U
|
Frame collapse | Dj l807 wire link to loptx earth | ||
| SONY |
BE4 KV14T1U
|
Dead | Cracks in print around loptx | ||
| SONY |
BE-4 KV14T1U
|
Dead | Loptr q802 s2055n s/c, r615 0.46r (121737100) o/c, ic601 strs5706 s/c | ||
| SONY |
BE-4 KV14T1U
|
Coloured lines on top | Eeprom ic002 st24c02cb1 (875937032) | ||
| SONY |
BE4 KV14T1U
|
Dead - no led lit or flashing | 0.47r resistor from the 300volts input to the chopper tx was o/c, replace strs5706 chopper chip, still dead - loptr s2055n leaky if loptx is grey, r806 1.5r with a 1.8r resistor part number 1-216-352-11. | ||
| SONY |
BE4 KV14T1U
|
Auto grey scale lines visible at top of screen | Eprom st24c02cb1 ic002 faulty | ||
| SONY |
BE4 CHASSIS
|
Int trips off - led flashing 6 times | Blue screen momentarily at sw off - int s/c in crt | ||
| SONY |
BE4
|
Txt can't be selected - nothing happens when you try | Enter service mode, and at the "tt" prompt type "18". this will turn teletext on or off depending on how it was originally set. sets which do not feature teletext or have the wrong version of ic001 fitted will only display p100 when teletext is selected. | ||
| SONY |
BE4
|
Reverts to st/by at sw on with 6 flashes from led | Over-current protection circuit (q600, 602) is operating, usuallyprobs in lop. to identify the cause, first dis fop chip (ic501). if set switches on with frame collapse, replace ic501. if set fails to switch on, dis ht feed to loptx. this should give 4 flashes of st/by led (no horizontal fly-back) showing that problem is in lop. check lop comps before condemning loptx. if st/by led continues to flash 6 times even with loptx disd, check r620 (270k) & r622 (470k) in over-current protection cct. | ||
| SONY |
BE4
|
Pic displaced down by 2cm | Volts on q500 & 501 way out - jungle chip mc44007p faulty |