| Make | Model | Problem | Solution | Date |
| | | |
| Found: 34
|
| Ferguson | 59M5 | Trips on/off aft 15mins | CL33 10µ 25v low cap - feeds trip safety logic cct & CP23 2n2 dry joints | 14-09-04 |
| Ferguson | 68M5 | Memory lost at sw on | Replace backup battery 2.4v BATT6098 from SEME | 14-09-04 |
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| Ferguson | 78M5 (ICC5) | NO NICAM SOUND AND POOR MONO SOUND | REPLACE C176 10MFD INSIDE IF CAN ALSO DRY JOINTS | 14-09-04 |
| Ferguson | ICC5 68M5 | Trips 3 times then dead | Dis trip by s/c coll/emitt of TL17 - CP26 hi esr | 14-09-04 |
| Ferguson | ICC5 78M5 | Sound - NICAM absent & FM sound poor as if off tune | C176 10µ in IF can & check for dry joints in can | 14-09-04 |
| Mitsubishi | AV1 M5 srs | Memory keeps getting corrupted . | Change R213 , R214 and ( M5 - R746 ) , ( AV1 - R702 ) from 220R to 1K . On M5's only ( and if not already done ) add a 5v6 ze | 14-09-04 |
| Mitsubishi | C21M5BT | Int start up at sw on | No line osc - R704 on SCL to micro o/c ( may be marked R703) | 14-09-04 |
| Mitsubishi | CM21M5BT | dead | Q901, R991, IC901, D909, C914 & Q552 replaced. A BU 508DF or BU2506DF works in place of BU2506DX Q552 | 14-09-04 |
| Mitsubishi | CT21M5 EE4 | Dead - blowing SOC2000 cct prot | Microprocessor s/c +5v pin to chassis | 14-09-04 |
| Mitsubishi | CT21M5 EE4 | No Txt or auto tune/store | eset options in eeprom from service mode | 14-09-04 |
| Mitsubishi | CT21M5B | Failure of Q552 | Order & fit AVM5KIT | 14-09-04 |
| Mitsubishi | CT21M5B | Under very poor signal conditions "Herringbone" pa | Fit specially screened RF lead between VCR & TV PtNo H24P001010 | 14-09-04 |
| Mitsubishi | CT21M5B CT25M5B | 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 | CT21M5BT | DEAD OR INT START UP | CHECK R704 FOR O/C SOMETIMES MARKED R703 ON PCB | 14-09-04 |
| Mitsubishi | CT21M5BT EE4 | Int loss of pic - sound still present | Invisible dry joint IC650 TEA5101B RGB o/p chip on crt base | 14-09-04 |
| Mitsubishi | CT25M5B | Failure of Q552 | Order & fit AVM5KIT | 14-09-04 |
| Mitsubishi | CT25M5B | Under very poor signal conditions "Herringbone" pa | Fit specially screened RF lead between VCR & TV PtNo H24P001010 | 14-09-04 |
| Mitsubishi | CT25M5BT | E/W DISTORTION, LACK OF HEIGHT | REPLACE EEPROM IC | 14-09-04 |
| Mitsubishi | CT25M5BT | Sound int mutes | IC701 micro ST9291N6 | 14-09-04 |
| Mitsubishi | CT25M5BT | Sound, no raster | Replace Q6E7 (JC501-R) on the tube base panel
(part of the spot-killer circuit). It had a B-E leak and was failing to turn on Q6E8 (2SA950-Y) which in turn robbed the 12 volt feed to pin 2 of the CRT driver chip IC660 (TEA5101B). | 14-09-04 |
| Mitsubishi | CT25M5BT EE4 | Field collapse | TEA2031A (IC551) & supply decoupler R516 0R82 safety resistor. | 14-09-04 |
| Mitsubishi | CT25M5BT EE4 | Green LED only - prev int off - HT present | No line dr from IC201, no micro activity, replace EEPROM 24C08 & set up | 14-09-04 |
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| Mitsubishi | EE4 (M5 models) | To enter service mode | Press & release S701 next to aerial socket, then press "9" on hset within 5 secs. Buttons 2 & 8 select adj code, buttons 4 & 6 adj data value. Button 1 cancels written data, button 0 stores data into EEPROM see article TV Jan 99 for more details | 14-09-04 |
| Mitsubishi | EE4 CT21M5BT | Reverts to st/by aft 15mins with a sqeal | HT was too high at 137V, due to R954 (120K in this set) going high | 14-09-04 |
| Mitsubishi | EE4 CT25M5BT | Chopper Tr blows aft few days | Replace Q901 (chopper), R901 (4R7 10W), D909 (3V Zener) and change 220R resistor on the print side of the CRT PCB to 1K2 1/2 watt. | 14-09-04 |
| Mitsubishi | EE4 CT25M5BT | Dead - blows chopper tr s/c | mod, i.e. change the 220R res on print side of CRT base to 1K2 1/2watt,this apparantly prevents a surge from blowing the chopper at switch off | 14-09-04 |
| Mitsubishi | M5 & AV1 srs | WHEN SWITCHED ON LED COMES ON GREEN , HT & LT PRES | CHANGE C955 TO 3300uF 35v ( Pt No 181P353000 ) EEPROM MAY NEED RE-SETTING . | 14-09-04 |
| Mitsubishi | M5 & AV1 srs ( 2 | POOR PICTURE . | CHANGE R521 FROM 82k TO 56k AND FIT ZENER DIODE KIT , Pt No 264P45090 | 14-09-04 |
| Mitsubishi | M5 & AV1 srs ( 2 | POOR PICTURE . | REMOVE Q6E2 , 6E3 , 6E4 , 6E5 . DECREASE RED DRIVE BY '5' POINTS , INCREASE BLUE BY '3' STEPS . THIS HAS BEEN DONE ON LATER S | 14-09-04 |
| Mitsubishi | M5 and AV1 srs | RGB OUTPUT SC ( IC660 TEA5101B ) | CHECK FOR 12v ON WIRE LINK TO PIN 2. IF MISSING OR LOW PICTURE WILL BE AWFUL AND A1 WILL NOT SET COECTLY. Q6E8 LEAKY. REPLA | 14-09-04 |