| Make | Model | Problem | Solution | Date |
| | | |
| Found: 776
|
| Matsui | 2580 | No raster (Field collapse) | Check for 24v pin 2 TDA8175 FOP chip IC401 - chip usual cause of no field scan | 14-09-04 |
| Matsui | 2580 | Pic break up on chan change | IC1503 MDA2062 memory chip | 14-09-04 |
| Matsui | 2580 | PICTURE BREAKS UP ON CHANNEL CHANGE | IC1503 MDA2062 | 14-09-04 |
| Matsui | 2580 | St/by only | HT rail varies between 78v - 175v with time. C808 1µ 63v o/c | 14-09-04 |
| Matsui | 2580 | St/by only - int | D118 going o/c int | 14-09-04 |
| Matsui | 2580 | To enter service mode | Hold down serv sw inside set & press chan button on handset. Press "Full" button to select from menu. For height press vol up/down. To store press "Normal" & then st/by | 14-09-04 |
| Matsui | 2580 | Won't come on after psu rebuild | Tr803 BD139-16 in 24v reg o/c | 14-09-04 |
| Matsui | 2580 2590 | DEAD OUTPUTS PRESENT ON SECONDARY SIDE OF CHOPPER | CHECK ALL VOLTAGE REGULATORS | 14-09-04 |
| Matsui | 2590 | Blowing line transistor BU508A TR604. | IC1401 ( DPU2543 ) | 14-09-04 |
| Matsui | 2590 | Blue raster. | R719 ( 18k 2w ) o/c. | 14-09-04 |
|
|
| Matsui | 2590 | Dead - no st/by led | HT present at LOPTr, no 24v at line driver stage or 5v supply - D807 BY299 faulty | 14-09-04 |
| Matsui | 2590 | Dead - no standby LED. | R807/8 ( 470k ) , Drys IC801 , TR801 ( BU ) , R815 ( 1R ) , Dry bt L805 , R826 | 14-09-04 |
| Matsui | 2590 | DEAD WITH STANDBY LED OUT NO 24V AT LINE DRIVER | CHECK 5V STANDBY SUPPLY D807 ( BY299 ) | 14-09-04 |
| Matsui | 2590 | Frame collapse. | IC401 ( TDA8175 ) , IC1401 ( DPU2543 ) | 14-09-04 |
| Matsui | 2590 | Hiss from speaker - OSG "Mono-stereo - bil A" | IC APU2470T ( Pt No.IC1301/013240252 ) | 14-09-04 |
| Matsui | 2590 | Lack of height. | 24v rail low at 18v TR803 ( BD139/16 ) | 14-09-04 |
| Matsui | 25M1 | Dead | D354 off sec of tfmr dry joints & dry joints both regs | 14-09-04 |
| Matsui | 25M1 Mk111 | Dead - no lights with psu ticking | St/by tfmr Pt no PTO146a from CHS | 14-09-04 |
| Matsui | 25M1 Mk2 | St/by only - light off when chan button pressed | No B+ volts - R624 120k in start up o/c, also check R620 120k | 14-09-04 |
| Matsui | 25M1 MkII | In St/by - led flashes slowly when brought out of st/by | Chopper tr Q613 2SC4429 s/c - blew when using meter to check it for s/c! - also blew meter; Q612 2SC3807 s/c & R620/621 120k (original cause) - one of them o/c. R602 3R9 7w o/c & o/c mains fuse | 14-09-04 |
| Matsui | 25M1 MkII | St/by only | R620 / 624 120k o/c | 14-09-04 |
| Matsui | 25M1 Sanyo EB2 | No memory | eeprom IC. ST24C02B (IC790) To initialise new chip, press and hold function button on tv, while pressing recall on remote handset. this gives message on screen Item-1 Set-0 Confirm Set number of all items is "0" by pressing the function button. If it is not "0" change to "0" by the level(+/-) button. (Changing the set number, automatically memorised.) Press the Recall buton to return to the normal TV mode. Then tune in and store channels as usual | 14-09-04 |
| Matsui | 25M2 (Sanyo) | No start up - LED flashing | R621 & 620 both 120k in psu pri | 14-09-04 |
| Matsui | 25M2 (Sanyo) | No start up LEDs flashing | R621 & 620 both 120k resistors in the PSU primary. | 14-09-04 |
| Matsui | 2890 | Dead - no chan ind | No ac supply to bridge rect as relay wasn't being energised by pin 30 micro IC103; No 5v to micro pin 52. D142 5v6 zener on print side s/c (between pin 52 IC103 & chassis) | 14-09-04 |
| Matsui | 2890 | Field collapse | R515 3R3 2w in psu & UPC1498H field o/p chip | 14-09-04 |
| Matsui | 2890 | Field collapse with very bright line | D406 s/c & R440 o/c in video o/p supply | 14-09-04 |
| Matsui | 2890 | Int goes into st/by or dead with no st/by led | St/by trfrmr T101 o/c winding - pt no 040535009C | 14-09-04 |
| Matsui | 2899 | No st/by - pic still present | RY101 on pcb contacts welded together | 14-09-04 |
| Matsui | 2899N | Chan display only | s/c lop tr Q401 2SD1546 caused by line dr tfmr joints? | 14-09-04 |