Make | Model | Problem | Solution | Date |
| | | |
Found: 33
|
B & O | MX1500 | INT GOES INTO SEEK | MOMENTARY SWITCH NEAR MAINS SWITCH INT SC ( REMOTE CONTACT ) | 14-09-04 |
B & O | MX1500 | Won't tune | TRANSISTOR 7070 LEAKY BC548 | 14-09-04 |
B & O | MX1500 78XX | raster but no sound or picture. | ICP1640 ( 630mA ) o/c. | 14-09-04 |
B & O | MX2000 | Bright on lh side, dark on right then goes completely dark | Dry joints pin 1 LOPTx | 14-09-04 |
B & O | MX2000 | Dead TEA2026 defective | LOPTx desroys chip so replace as well & replace or fit 15v zener between o/p pin 7 chip & chassis | 14-09-04 |
B & O | MX2000 | Faint pic after LOPTx replacement | RL25 burnt | 14-09-04 |
B & O | MX2000 | Slightly off tune at sw on | Back up battery on its way out - if no startup after replacement s/c battery terms momentarily | 14-09-04 |
B & O | MX2000 | White hor line 3-5 cm tall | No 200v on crt base - dry joints pin 9 LOPTx | 14-09-04 |
B & O | MX2000 3119 | St/by only (dot in display) | 124v HT present no line drive as RP10 1R2 hi res | 14-09-04 |
B & O | MX2000 31XX | Bright raster with no sound. | RL28 1.5ohm dry. | 14-09-04 |
|
B & O | MX2000 31XX | INT FIELD COLLAPSE | DRY JOINTS ON EW DIODES OR ON CL12 | 14-09-04 |
B & O | MX2000 31XX | No picture. | Drys on CRT base. | 14-09-04 |
B & O | MX2000 31XX | No sound. | 6Mhz coil LD40 o/c. | 14-09-04 |
B & O | MX2000 31XX | Standby - no standby light. | RP43 0.47ohm o/c , CR67 ( 1 , 000uf ) on microcomputer PCB8. | 14-09-04 |
B & O | MX3000 | Various int inc field collapse, fading pic, low width | Check for dry joints in apropriate cct | 14-09-04 |
B & O | MX3500 | Crackling Sound | Dry joints audio o/p chips IC3 & 4 on PCB10 (bottom board) | 14-09-04 |
B & O | MX4000 | Dead - PSU comps destroyed | Tr1 BUT12AF, Tr12 BD435 s/c, R38 0R47 o/c - C12 dry joints (hard to see) | 14-09-04 |
B & O | MX4500 | Vision buzz & noisy pic | Check C176 10µ under screening can | 14-09-04 |
B & O | MX4500/5000 | Tuner int | Discard VHF tuner if not reqd or blanket resolder (nearest ae skt) | 14-09-04 |
B & O | MX6000 | Dead or int trips when tapped | Check for dry joints psu pri | 14-09-04 |
B & O | MX7000 | Dead - tripping | Dry joint capacitor adj to J9 in chopper ctl | 14-09-04 |
B&O | MX3500 | crackling sound | dry joints AF o/p chips IC3 & 4 on PCB10 (bottom) | 14-09-04 |
JVC | 25S1EK MXII | NO VISION - WONT TUNE IN | C119 47n IF UNIT. ON PIN 2 IC 101 | 14-09-04 |
JVC | 25S1EK MXII | StBy LED changes red to gren but no line drive | Check Q902 V if missing R903 ( 2K2 ) o/c | 14-09-04 |
JVC | AV25GS1EK MX | St/by only | Dis pins 5 & 6 of EEPROM to check - if set powers up then EEPROM may be faulty (IC704 pt no CAT35C104HP) | 14-09-04 |
JVC | AV25S1EK MXII | Unstable pic with line jitter | Video o/p from IF module has ragged sync pulses - 1µ elect cap in AGC feed | 14-09-04 |
JVC | AV28S1EK AV25S1EK MX2 | St/by light changes col but no line drive | No supply to line dr tfmr as R903 2k2 hi res (switches st/by tr Q902) | 14-09-04 |
JVC | AV28S1EK AV25S1EK MX2 | Width & E-W faulty | Replaced memory chip for electronic screwdriver - 24C01A/P IC1707 | 14-09-04 |
JVC | AV28SD4EK MXIV | No sound and all programs show the same channel | Check the data lines on pins 14 and 13 of the connector CNO13 on the sound subboard. If they are low, disconnect the lines one by one from all the chips until the correct level is restored (about 4 V p-p). Also check IC001 5V regulator for DJs, as this could be the culprit. In this case all 3 chips on the sound board had leaky data line inputs: | 14-09-04 |
JVC | MX2 | Field int collapses | D441 RD3.0ES(B2) goes leaky when warm - to pin 13 TA8859P IC461 | 14-09-04 |