| Make | Model | Problem | Solution | Date |
| | | |
| Found: 30
|
| Goldstar | CI14A80F CI20A80F CI21A80F | Dead - Q801 chopper tr s/c | Replace IC801 & check R821 150k & R806 120k | 14-09-04 |
| Goldstar | CI14A80F CI20A80F CI21A80F | Dead - R802 680k failed | Fit 1w version instead of ?w | 14-09-04 |
| Goldstar | CI14A80F CI20A80F CI21A80F | No tuning or tuner drift | Check Q18 - if no 33v check FR403 - if o/c fit 1R ?w | 14-09-04 |
| Goldstar | CI21A80 etc | Won't come on from st/by | May be in child lock - use r/c to sw on | 14-09-04 |
| Goldstar | CI21A80FA PC31A | Goes in/out of st/by - otherwise dead | No volts to HT rect D804 - L804 dry joints | 14-09-04 |
| Mitsubishi | 21AV1BD | No pic (blue screen) or sound | Refitting a loose plug and soldering dj's on the dolby panel & replacing the onboard output IC TDA7263 and it's safety resistor gave a good picture with a loud hiss instead of sound. Go into service mode & reset eprom data to get sound back. | 14-09-04 |
| Mitsubishi | CT21A2 | WHINE ON NICAM RECEPTION ONLY | LINK C3346 & C3342 CATHODES | 14-09-04 |
| Mitsubishi | CT21A2STX | Dead - Q901 s/c. | Fit mod kit ( wVe 77901 ) R901 , D908 , Q901 , C908 to 2700pf , C966. | 14-09-04 |
| Mitsubishi | CT21A2STX etc | Dead - LOPTr Q522 s/c | C905 (470µF, 35V), C906 (47µF, 50V), C909 (2.2µF, 50V) and C920 (100µF, 25V).Note that the transistor type varies with screen size, With a 21in. tube it's type
2SD1877, part no, 260P606010; with a 25in, tube it's type 2SD1878 (part no, 260P607010)
while with a 29in. CRT it's type 2SD1879 (part no. 260P608010), | 14-09-04 |
| Mitsubishi | CT21A3STX | Pattern obliterates sound/pic - ok via scart | C9, 13, 21 & 26 0µ47 in IF unit | 14-09-04 |
|
|
| Mitsubishi | CT21A3STX | SOUND MUTES INT | Q1A1 ON DET PCB Pt No 260P543050 | 14-09-04 |
| Mitsubishi | CT21A5STX | Int start up/switches off | Dry joint Q954 - also check C905/914 & other dry joints | 14-09-04 |
| Mitsubishi | CT21A5STX | PATTERN ON SCREEN | REPLACE C957 AND C959 | 14-09-04 |
| Mitsubishi | CT21A5STX | Slow start up | C906 47µ 50v hi esr | 14-09-04 |
| Mitsubishi | CT21AV1 CT25AV1 | Failure of Q552 | Order & fit AVM5KIT | 14-09-04 |
| Mitsubishi | CT21AV1 CT25AV1 | Tuning drift mainly at top end of band | Add ( 180K ) & Diode ( IN4148 ) in series cathode of diode to 5V pin 6 Tuner & res to Tuning Voltage line pin 2 | 14-09-04 |
| Mitsubishi | CT21AV1B | Line collapse | R910 100R 1w, C901 (marked as C5D3) 470n 400v & resolder dries in the area | 14-09-04 |
| Mitsubishi | CT21AV1B EE3 | Dead - psu fault | Q952 s/c D957 s/c Z953 o/c - mod kit 8VREG-KIT available if Q952 u/s | 14-09-04 |
| Mitsubishi | CT21AV1B EE3 | Dead with green LED lit | PSU running but no line drive - mod = C702 from 1000mfd to 10mfd 25v, check C955 is 3300mfd 16v. Replace R702, 213, 214 with 1k 1/4w | 14-09-04 |
| Mitsubishi | CT21AV1BS | col level int | Q704 JC501 blanking tr on main pcb | 14-09-04 |
| Mitsubishi | CT21AV1BS | Dead | All psu o/ps ok but no line drive - IC ST24C08 memory IC | 14-09-04 |
| Mitsubishi | CT21AV1BS | St/by only | C955 2200µ sec psu hi esr | 14-09-04 |
| Mitsubishi | Euro 12 CT21A2STX | Slow start up for a period of days - then died | C906 47mfd 50v & C920 100mfd 15v, IC901 TEA2261, chopper tr Q901 2SD1887, FOP chip IC451 TDA8178S (TDA8178S nla - fit TDA8171 & replace C457 with 0.22mfd & 1R5 in series. Kit available pt no H27P014020 | 14-09-04 |
| Panasonic | Euro2 TX21AD2/M | Relay clicks on & off in regular fashion | C807 100µ 25v hi esr | 14-09-04 |
| Panasonic | TX21MD1, TX21AD2, TX25MD1,
TX28LD1, TX25AD1, TX25AD1DP,
TX29AD1, TX29AD1DP | Black & white vert lines - replace VDP3108 | Orig IC601 nla - use kit TZS9EK002-2, which includes EEPROM with nec software changes to use VDP3108APPA1 | 14-09-04 |
| Philips | GR21AA | DEAD STBY LIGHT FLASHING NO LINE DRIVE | R3455 1k HIGH | 14-09-04 |
| Philips | GR21AA | DEAD WITH POWER SUPP. RUNNING | CHECK IC7880 PCA84C81AP/098 ( UNPLUG TEXT PCB TO PROVE ) | 14-09-04 |
| Philips | GR21AA | EHT BUT NO SOUND OR PIC AND A FLASHING LED ( WHEN | TDA2579B PRODUCING WRONG S.CASTLE PULSES | 14-09-04 |
| Philips | MD 2.21 AA 28PT7303 | After replacing LOPTx set starts up with brief EHT then reverts to st/by | FET on same heatsink as BU2520 is S/C | 14-09-04 |
| Pioneer | SD21AV1 | blank screen - purple at right | ripple on 12v line cured by replacing C522 100µ, C525 10µ. TDA5930 u/s | 14-09-04 |