| Make | Model | Problem | Solution | Date |
| | | |
| Found: 1049
|
| Panasonic | Alpha 1 TX3 | Line whisle with cogging verts | STR54041M - also check elects | 14-09-04 |
| Panasonic | Alpha 1 TXC71 | Sound noisy - ok thro scart | C2401 dry joint on AV/tuning/control board | 14-09-04 |
| Panasonic | Alpha 1 TXC74 | Width lacking | Q753 2SD762 o/c | 14-09-04 |
| Panasonic | Alpha 1W | Chan ind lit with whistle & nothing else | No line drive traced to IC101 TDA4505-M1 jungle chip | 14-09-04 |
| Panasonic | Alpha 1W | Cogging on verts | C808 10µ50v | 14-09-04 |
| Panasonic | Alpha 1W | Dead | No 12v supply to line osc pin 7 IC101 from 12v reg IC851 - D855 o/c | 14-09-04 |
| Panasonic | Alpha 1W | Field collapse | TDA4505M faulty - use TDA4505E & change R112 from 1M5 to 470k & R113 from 22k to 470k | 14-09-04 |
| Panasonic | Alpha 1W | Loud wine but no picture. | R851 ( 1.2R fusible ) go's high. | 14-09-04 |
| Panasonic | Alpha 1W | NO COLOUR | TDA3562A | 14-09-04 |
| Panasonic | Alpha 1W | No sound or picture - squealing from PSU. | D854 s/c , if still no good suspect LOPTX. | 14-09-04 |
|
|
| Panasonic | Alpha 2 | AFTER 1hr TEXT FLASHES ON SCREEN . TEXT LOSES SYNC | C3511 10nF | 14-09-04 |
| Panasonic | Alpha 2 | AFTER 4hrs R567 BLOWS AND Q551 VERY HOT | C502 DRY JOINTED | 14-09-04 |
| Panasonic | Alpha 2 | Analogue bars not locked - pic ok | C3511 220pf connected to pin 24 pulse gen chip on Txt panel leaky | 14-09-04 |
| Panasonic | Alpha 2 | Black line on RH side of pic | Check dry joints line dr trfmr before LOPTr bites dust! | 14-09-04 |
| Panasonic | Alpha 2 | Blank raster - no tuning | C2612 10µ non pol cap dry joints at pin 5 IC2601 TV/AV sw IC | 14-09-04 |
| Panasonic | Alpha 2 | Blank raster, no sound & unlocked chan no | No 12v on A panel due to R2420 0R68 o/c | 14-09-04 |
| Panasonic | Alpha 2 | BLOWS LINE TRANSISTOR | LINE DRIVER TX DRY JOINTED | 14-09-04 |
| Panasonic | Alpha 2 | BLUE DISAPPEARS AFTER HALF AN HOUR | C612 0.01uF ON PIN 5 IC601 | 14-09-04 |
| Panasonic | Alpha 2 | Chan display only | D851 leaky in secondary of psu | 14-09-04 |
| Panasonic | Alpha 2 | Chroma but no luma | replace TDA4565 CTI chip | 14-09-04 |
| Panasonic | Alpha 2 | Col smearing (red in this case) | L353 on crt base cracked | 14-09-04 |
| Panasonic | Alpha 2 | COLOUR FAULTY WITH REF OSC TYPE RED/GREEN BARS RUN | C642 10nf ( TO SET OSC. SHORT PIN 11 OF IC601 TO Chassis AND ADJ. TRIMMER ) | 14-09-04 |
| Panasonic | Alpha 2 | Colour int off & changes hue | C612 0µ01 pin 5 IC601 leaky or C642 leaky | 14-09-04 |
| Panasonic | Alpha 2 | Contrast - poor. | R562 ( 130k , 0.25W ) o/c. | 14-09-04 |
| Panasonic | Alpha 2 | Contrast weak | R562 130k ?w in beam current lim | 14-09-04 |
| Panasonic | Alpha 2 | Dead | D854 & R815 ( 5.6ohm ) over volts diode | 14-09-04 |
| Panasonic | Alpha 2 | Dead - no line drive | R851 2R2 in line dr tr supply o/c | 14-09-04 |
| Panasonic | Alpha 2 | Dead - was no pic to start with | LOP tr 2SD1441 s/c, fusible R567 1A N25CP o/c, R851 1R2 1/2w o/c, replaced C855 100µ 35v, C808 10µ 50v (both hi esr) | 14-09-04 |
| Panasonic | Alpha 2 | Dead aft 20 mins | OK if pins 3 & 4 of opto linked - D811 ON3105 opto coupler faulty | 14-09-04 |
| Panasonic | Alpha 2 | Dead aft 4hrs with LOPTr overheated | R567 o/c in LOP - C502 in line osc stage dry joint | 14-09-04 |