Amigosdaeletronica
RESERVADOS => DICAS PROFISSIONAIS => Tópico começado por: marcosbr em 05, Dezembro, 2017, 14:13
É possível confundir um defeito da T-CON com uma "tela defeituosa"
O correto é verificar cuidadosamente antes de dar o veredito.
No manual de serviço, geralmente vem com informações sobre pontos de medição, oscilogramas, etc...
É importante os valores estarem próximos a esta tabela. Em caso de falta ou diferença gritante...
Vale a pena verificar ou substituir!
Abaixo tem um exemplo de TVs LG. (*leia)
(https://3.bp.blogspot.com/-xke8sKddiQo/WKsim2zje0I/AAAAAAAAHi4/dESO2IzZ6_ALzFPv8AA_alLIDZSINWyygCLcB/s640/04_Placa%2BT-CON%2Bcon%2Bcables%2Bflex.JPG)
VIN – 11V positivos
VDD – 15V positivos
VGL – 4,7V negativos
VGH – 27V positivos
VGL – 4,7V negativos
VCORE – 1,8V positivos
VCC1.8 – 1,8V positivos
GIP RST – 4,6V negativos
* Outras marcas basta seguir os valores e pontos do manual de serviço!
De quebra este glossário para auxiliar suas pesquisas.
Bom trabalho!
AC Alternating current
ACDRV AC adapter to system-switch driver output
ACEDET Adaptor Current Detector
ACGOOD Valid adapter active-low detect logic open-drain output
ACIN Adaptor Current sensor Input
ACN Adapter current sense resistor
ACOP Input Over-Power Protection
ACOV Input Overvoltage Protection
ACP Adapter current sense resistor, positive input.
ADP+ Adapter Positif Suplay
ADP_ID Adapter Identity
AGND Analog Ground
ALWP ALWAYS ON POWER
B+ AC OR BAT POWER RAIL FOR POWER CIRCUIT
BATT Battery
BAT+ BAT POWER RAIL FOR POWER CIRCUIT
BAT_DRV Bat Fet Gate Driver
BAT_V Battery Voltage
BOM BILL OF MATERIAL MANAGEMENT
BT BUTTON
BT_EN Bloototh Enable
BUZER Connected
BYP Baypass
CHGEN Charge enable active-low logic input
CIN Input Capacitor
CLK_EN CLKOCK ENABLE
CN CONECTOR
CRT Cathode ray tube
CSIN Current Sensor input Negatif
CSIP Current Sensor input Positif
DC Direct current
DM DIM/DIM SOCKET/SOKET MEMORY/SOKET DDR
DOCK DOCKING SOCKET
EC Embedded Controler
EC_ON Embeded Controler Enable
EMI Elektromagnetik Interference(GANGGUAN ELEKTROMAGNETIK)
EN ENABLE
ENTRIP Enable Terminal
F FUSE
FSEL Frequency Select Input
GATE Trigger gate
GND Ground
GP GROUND PIN
GPI General Power Input
GPIO General Power Input Output
HDMI High-Definition Multimedia Interface
ID Continuous Drain Current
IDM Pulsed Drain Current
IIN Operating Supply Current
IIN(SHDN) Shutdown Supply Current
IIN(STBY) Standby Supply Current
IS Continuous Source Current (Diode Conduction)
IVIN Battery Supply Current at VIN pin
JP JUMPER POINT
KBC Keyboard Controler
LCDV LCD POWER
LDO Linear Driver Output
LGATE Lower-side MOSFET gate signal
LPC Low Pin Count
LVDS Low-voltage differential signaling(SYSTEM PENSIGNALAN)
MBAT MAIN BATTERY
NB North Bridge
ODD OUTPUT DISC DRIVE
PCI Peripheral Component Interconnect
PGOOD Power good open-drain output
PIR PRODUCT IMPROVED RECORD
PSI# Current indicator input
PVCC IC power positive supply
RSMRST Resume Reset
RTC REAL TIME CLOCK
SB South Bridge
SHDN Shutdown
SYS_SDN System Shutdown
SPI Serial Peripheral Interface
TD Death Time
THRM THERMAL SENSOR
TMDS Transition Minimized Differential Signaling(TRANSMISI DATA TEKNOLOGY)
TP TEST POINT
TPAD THERMAL PAD
UVLO Input Undervoltage Lock Out
V RAIL(POWER)
V+ Positive Voltage
VADJ Output regulation voltage
VALW ALWAYS ON POWER
VALWP VALW PAD
VBAT BATTERY POWER
VCCP Power chip(ich,graphic chips)
VCORE POWER PROCESOR
VDD Control power supply
VDDR POWER DDR (VDRAM/VRAM/VMEM)
VDS VOLTAGE DRAIN SOURCE
VFB Feedback inputs Power
VGS VOLTAGE GATE SOURCES
VIN Input Voltage Range
VIN ADAPTER POWER SUPLY (vol_in)
VL Power Lock
VL Voltage across the load/Tegangan beban resistor
VL Voltage Linear
VLDOIN Power supply of the VTT and VTTREF output stage (to Power MOS)
VOT Volt_Out
VRAM Power Memory
VREF Power Reference/Schema Reference/Tensão de referência
VS SUITCH POWER
VS+ SUPPORT VOLTAGE POSITIF
VSB POWER SWITCH BUTTON
VSS Signal ground
VSW Power Switch
VTT Memory Termination Voltage
VTERM Memory Termination Voltage
VUSB POWER USB
VGA POWER VGA (VGPX/VGPU/VCVOD)
VGFX POWER GRAPHIC CHIP
VREF VOLTAGE REFERENCES
Muito bom, boa literatura técnica!
Obrigado.