| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Panasonic | Alpha 3 | E-W bowing with no control effect | Check TDA8145 IC701 & R708 & L701 also 0µ01 50v decoupling cap to pin 1 IC701 | ||
| Panasonic | Alpha 3 | Dead. | R555 HT feed o/c. | ||
| Panasonic | Alpha 3 | Dead with LED flickering at sw on | Q823 conducting as opto was turned on; Q825 was sw on because C822 0µ01 ceramic cap leaky | ||
| Panasonic | Alpha 3 | DEAD APART FROM BUZZING NOISE | R555 FUSIBLE RESISTOR OC IF EHT TOO HIGH AFTER REPLACING SUSPECT LOPT | ||
| Panasonic | Alpha 3 | Dead - R555 fusible res o/c in LOP stage feed | LOPTx | ||
| Panasonic | Alpha 3 | Dead - LOPTr leaky | Also check R567 1A fuse feeding LOP stage for o/c | ||
| Panasonic | Alpha 3 | Dead - blows R822 4R7 5W & R555 LOP fusible | Line drive wfm dist - C501 0µ1cap in line osc stage leaky | ||
| Panasonic | Alpha 3 | Dark pic getting worse with time | Q355 2SC3311 on crt base leaky (black level ref) | ||
| Panasonic | Alpha 3 | Dark blank raster with no sound or display | No micro activity - dis serial & clock lines to Txt panel to elliminate this cct; set works when this was done - IC3507 was faulty (MAB8461PW13S) | ||
| Panasonic | Alpha 3 | Dark blank raster - no sound. | C1251 ( 10nf ) leaky , main microcontroller & memory chips. | ||
| Panasonic | Alpha 3 | Colour varies - blue content reduces - int | C352 330pF ceramic cap decoupling Q366 emitter | ||
| Panasonic | Alpha 3 | Bright flyback lines across top of screen - very int | Fit kit TZSEN001 consisting of replacement scan coil and FOP chip | ||
| Panasonic | Alpha 3 | Black diagonal lines across pic - very int | D329 zener diode was leaky MA4068 - stabilises supply to TDA4670 IC302 | ||
| Panasonic | Alpha 3 | AFTER 5mins PIC + SOUND DISAPPEAR | STUCK IN RESET C1251 10nF | ||
| Panasonic | Alpha 2W TX25T2 | Field - height excessive with top foldover | R469 150R o/c (under white ceramic res by loptx) |