Sony Repair Tips
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Results: 20073
Results: 20073
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| SONY |
BE4 KV21T3U
|
Int dead | R607 0r56 2 watts had risen in value to nearly 2Ω | ||
| SONY |
BE4 KV21M3U
|
Field collapse | R814 0r47 in 24v supply o/c - use proper improved sony type | ||
| 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
|
Dead | Cracks in print around loptx | ||
| 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 | ||
| SONY |
BE4
|
No txt or osd | R081 o/c, c810 also failed | ||
| SONY |
BE4
|
Field collapse | No 24v supply to ic501 - r814 0r47 ?w fusible o/c - improved type 1-249-443-11 introduced | ||
| SONY |
BE4
|
Dead - led flashes 6 times then repeats | Over current problem - loptx u/s | ||
| SONY |
BE4
|
Dead - led blinks 6 times (field fault) | Tda9302h fop chip dry jointed and u/s | ||
| SONY |
BE4
|
Dark pic | C823 0µ022 250v leaky in beam lim cct | ||
| SONY |
BE-4A KVM2171U
|
No text, excessive width, poor grey scale | Nvm corruption. replace ic002 new type st24c02fb6 (875937032). change c0255 from 47uf to 1000uf, add 5.6v zener from pin 8 ic002 (cathode) to earth, tighten earth spring around crt in the shape of u | ||
| SONY |
BE-4A KVM2171U
|
Frame collapse | R622 (ht feed) o/c, r814 0.47r safety (frame feed) o/c | ||
| SONY |
BE-4A KV21T3U
|
Volume goes to max, no remote or front control functions | Micro gets hot, replace micro part no 875947506 | ||
| SONY |
BE-4A KV21T3U
|
No pic (blank video) | D722 (871999133) o/c is crt | ||
| SONY |
BE-4A KV21T3U
|
Blank raster with flyback lines | A1 voltage too high, replace loptx | ||
| 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 |