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Results: 88012
Results: 88012
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| PHILIPS |
FW-C505
|
I'm sound | 7501 tda 7468d ruim | To replace | Adriano |
| PHILCO |
PH28S63D
|
Back light does not turn off, in st-by LEDs stay on | On the main board q1 open | Usei bc817-25 npn 45v 500ma | Ederlin |
| SAMSUNG |
UN50RU7100
|
Does not turn on, LED is off. | Line 3.2 with zero volts. Cause: shorted smd capacitor c1409 below the processor heatsink. | It is used to shorting other capacitors on the same line. | ELETRONICA DANIEL |
| SOM GRADIENTE |
DS 700
|
Wsound does the power switch plug connect? | Switch on switch plug on off | ||
| PANASONIC |
TC 50A400B
RODRIGO COFFERI |
Works a little, turns off and red LED flashes once | Test the 8 points on the bus output, if any are different, even by 1 or 2 volts, change the bus | After the replace, remove the janper j101 and j201, and the resistors r103 and r 203 | Rodrigo cofferi |
| JVC |
AV-T2977
|
Red color varying until it disappears. | Zener d801 conducting on both sides. if the affected color is another, check the other two zeners. | Hardtecnica | |
| GRADIENTE |
HT-M299S
|
Red color varying until it disappears. | Zener d801 conducting on both sides. if the affected color is another, check the other two zeners. | Hardtecnica | |
| JVC |
AV-T2977
|
Randomly the speaker making hissing noises or going silent. | Replace zener d632. good on the multimeter but it had a crack. | Hardtecnica | |
| GRADIENTE |
HT-M299S
|
Randomly the speaker making hissing noises or going silent. | Replace zener d632. good on the multimeter but it had a crack. | Hardtecnica | |
| JVC |
AV-T2977
|
Reduced frame in the upper part with several messy horizontal lines in the lower half. | Change c406 0.01uf 50v | Hardtecnica | |
| GRADIENTE |
HT-M299S
|
Reduced frame in the upper part with several messy horizontal lines in the lower half. | Change c406 0.01uf 50v | Hardtecnica | |
| JVC |
AV-T2977
|
Screen with shrunken frame at the bottom. palliative was to increase the vlin in the service menu. | Change c414 of 1uf 50v | Hardtecnica | |
| GRADIENTE |
HT-M299S
|
Screen with shrunken frame at the bottom. palliative was to increase the vlin in the service menu. | Change c414 of 1uf 50v | Hardtecnica | |
| BRASTEMP |
BMT45BRHNA
|
Touch panel does not light up, no function, but turns on light | Power board with transformer with open primary. Before changing, remove it from the board and test, remove protective plastic and check the thermal fuse. play in the relay connectors. | Replace the thermal fuse of the low voltage transformer and add thermistor MF72/5D11 for voltage spikes. resolder transistors 7812 and 7815 - adjust the gate and retighten connectors (general) loosely | Jerolamo |
| PHILIPS |
50PUG6513/78
50PUG6513/78 |
Does not turn on, no standby. | Shorted mosfets and blown ceramic capacitor | Power supply board 715g8967-p02-009-001s with the power supply board fuse open (5a-250v) replace but first replace the 02 mosfets q9102 and q9101 (k10a50d) and the 02 ceramic capacitors that sit on top of them 101k 1kv | MARCO BORSATO - MEDTEC INFORMATICA |
| PHILCO |
PH21US
|
TV turns on with a black band on the left side of the screen, set to service mode, but after a while it came back. | The signal was missing on pin 57 of the computer, in the afc mesh, when touching this mesh the TV made a sparking noise near the flyback, I found the c450 with one of the terminals broken and the same one cracked | Replace the c450 and the image is back to normal | Seen store |
| TOSHIBA |
2051U18
U18 |
Low sound | Cause speaker | Speaker replacement | Cícero Santos |
| LG |
MCD 212
|
Low audio. | 35v missing. | Replace dz901 (with leak), if that doesn't work, place a 1mf/50v capacitor connecting to pins 3e4 of the pc901, respecting the polarization. | Eletrônica FBS |
| SAMSUNG |
UN32J4000AG
AG |
No video | Absence of voff voltage, 7v9 zenner with leak | D14 diode replacement | diego boeira |
| PHILCO |
PH40U16DSG
|
Doesn't work. Sometimes the stand by LED comes on but when you start it goes back to stand by | Fet from the power supply to the digital multimeter is fine. In the analog multimeter on the x1k scale tsound is a small leak. |