| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Panasonic | Alpha 4 | Crackle from lh speaker | R2081 10k sm cracked | ||
| Panasonic | Alpha 4 | Blank screen - OSD OK | 9v supply to IF proc chip IC101 low at pin 41. R170 56R hi res | ||
| Panasonic | Alpha 4 | Blank raster - sound ok - same on scart; on Txtshows "P100" at the top left and "*** TXT ***" flashing at the bottom centre of the screen. | Replace IC3002 (M52472P) on the "H" panel. | ||
| Panasonic | Alpha 3 TX28A2X | E-W bowing | R751 33R o/c | ||
| Panasonic | Alpha 3 TX28A2 | Txt lines at top of pic | C454 ( 4.7 uF; C455 ( 100 uF ) and frame output I.C. AN5521 | ||
| Panasonic | Alpha 3 TX25W2 | Txt fault - header unstable & unsync in mix mode | C3511 220pF on board H (connected to pin 24 timing of SAA5231 IC3501) | ||
| Panasonic | Alpha 3 Alpha 3 | No sound - dark blank raster. | C1251 ( 10nf ) leaky , main microcontroller & memory chips. | ||
| Panasonic | Alpha 3 | Txt poor with missing lines & corrupt | C3507 100pF leaky to pin 9 IC3501 | ||
| Panasonic | Alpha 3 | Txt - no pages but header present or jumping Txt | C3511 220pF ceramic cap on Txt panel leaky | ||
| Panasonic | Alpha 3 | The Panasonic Alpha 3 Chassis | See TV Mag Mar-Jun 1994 | ||
| Panasonic | Alpha 3 | Stuck in standby. | LOPTX | ||
| Panasonic | Alpha 3 | St/by only | Q825 opto driver hard on. Removing R843 which links base of tr to micro power on/off pin produced a blank raster. Micro reset line stuck at 2v instead of 5v - C1251 10nF was leaky | ||
| Panasonic | Alpha 3 | Red & Green 'gliches' across screen int | OK in Txt mode - C649 120pF faulty - pin 3 IC302 transient improvement chip | ||
| Panasonic | Alpha 3 | R822 4R7 10W SURGE LIMITER BLOWN , WHEN REPLACED R | REPLACE C501 0.1uF | ||
| Panasonic | Alpha 3 | Poor focus - adj focus varies brill | internal leak in CRT between A1 and focus electrodes |