【om8371ps用什么型号可以代换】集成电路测试和维护下一步(IC测试经验)

(a)常用的检测方法

集成电路常用的检测方法有在线测量、非在线测量和更换方法。

1.如果非在线测量非在线测量藻类集成电路未焊接到电路中，则将每个针脚之间的DC电阻值与正常同型号集成电路中针脚之间的DC电阻值进行比较，以确定其是否正常。

2.在线测量在线测量使用电压测量、电阻测量和电流测量等方法来测量集成电路的每个针脚电压、电阻和电流值是否正常，从而判断集成电路是否损坏。

3.替换法替换法是用众所周知的相同型号、规格的集成电路替换测试的集成电路，可以判断集成电路是否损坏。

160种开关电源集成电路替换表

这张票是彩色电视LG、SVA、TCL、长虹、春兰、创维、东芝、飞利浦、福一、高露华、海尔、海信、陈兴、江歌、强力、乐华、希利、Hilly

本表中列出的开关电源集成电路按26个字母顺序排列，便于快速调查。

模特

替代模型

56A245-2

STR440、STR441、STR446

56A246

Ix0256ce、ix0512ce、ix0465ce、ix0654ce、str40090、str41090、hkd41090

BU4020B

Ha 1755ps、ha 17555、ha 1755gs、HD 14020b

HA17555

Ha 1755ps、bu 4020b、ha 1755gs、HD 14020b

HA17555GS

Ha 17555、ha 1755ps、bu 4020b、HD 14020b

HA17555PS

Bu4020b、ha 17555、ha 1755gs、HD 14020b

HD14020B

Ha17555、ha1755ps、ha1755gs、bu4020b

HG5312

Str 5314、str 5395、str 5412、str 5418、Hg 5313、hkd 5412、kwy 5412

HG5412

Str5312、str454、str5313、str5314、str5395、str5418

HG5313

Str 5314、str 5395、str 5412、str 5418、Hg 5312、HD 5412、kwy 5412

HKD0689

STK7358、IX9689CE、IX0689CK

HKD40115

Str40115、str4412、str50103、str50103a、str50115b

HKD41090

IX0256CE, IX0512CE, IX0465CE, IX0654CE

HKD4211

STR4211, STR4211H, STR4060, STR4090, STR4090S

HKD54041

STR54041, STR58041, STR59041, KWY54041

HKD6020

STR6020, STR6020S

HKD9502

STR450A, STR451, STR452, STR454, STR455, STR456, STR514, IX0205CE

HM7941

HRL7101, HM7103, HRL7103

HM8801G

KM8901A, KM8901, KM8916, KM8951B, KM8951, KC8801G

HM9101

HM9102, HRL9102, HRL201

HM9102

HM9101, HRL9102, HRL201

HM7103

HRL7101, HRL7103, HM7941

HM9201

HM9203, HM9204, HM9205, HM9206, HM9207

HM9203

HM9201, HM9205, HM9206, HM9207

HM9204

HM9203, HM9205, HM9206, HM9207

HM9205

HM9201, HM9203, HM9204, HM9206, HM9207

HRL201

HM7941, HRL7101

HRL7103

HRL7101, HM7103, HM7941

HRL9102

HM9101, HM9102, HRL201

HSY114

JU0003, JU0008, JU0086, JU0111,JU0114, JU0116, JU0130

HRL7101

HM7103, HRL7103, HM7941

IX0247CE

STR4090, IX0323CE

IX0205CE

STR4501A, STR451, STR452, STR454, STR453, STR456, STR514, HKD9502

IX0256CE

IX0512CE, IX0465CE, IX0645CE, STR41090, STR40090

IX0308

IX0308C, IX0308CE, IX0308CEZZ, STK7308, STK7309

IX0308C

IX0308, IX0308CE, IX0308CEZZ, STK7308, STK7309

IX0308CE

IX0308, IXO308C, IX0308CEZZ, STK7308, STK7309

IX0308CEZZ

IX0308, IX0308C, STK7308, STK7309

IX0323CE

STR4090, IX0247CE

IX0387CE

STR7308

IX0465CE

IX0512CE, IX0645CE, STR41090, STR40090, 56A246, HKD41090

IX0467CE

STK4060, STK4090, STK4090S, STR4060, STR4090, STR4090S

IX0512CE

IX0256CE, IX0465CE, IX0645CE, STR41090, STR40090

IX0645CE

IX0256CE, IX0512CE, IX0465CE, STR41010, STR40090, 56A246, HKD41090

IX0689CE

STR7358, IX0689CEZZ, STK73508, STK7359

IX0689CEZZ

STK7358, IX0689CE, STK73508, STK7359

IX0689CK

STK7358, HKD0689, IX0689CE

JU0003

JU0008, JU0086, JU0111, JU0114, JU0116, JU0130, HSY114

JU0008

JU0003, JU0086, JU0111, JU0114, JU0116, JU0130, HSY114

JU0086

JU0003, JU0008, JU0111, JU0114, JU0116, JU0130, HSY114

JU0111

JU0003, JU0008, JU0086, JU0114, JU0116, JU0130, HSY114

JU0114

JU0003, JU0008, JU0086, JU0111, JU0116, JU0130, HSY114

JU0116

JU0003, JU0008, JU0086, JU0111, JU0114, JU0130, HSY114

JU0130

JU0003, JU0008, JU0086, JU0111, JU0114, JU0116, HSY114

KG8801G

KM8801G, KM8901A, KM8901, KM8910, KM8951B

KM8901

KM8801G, KM8901A, KM8916, KM8951B, KM8951, KG8801G

KM8901A

KM8801G, KM8901, KM8916, KM8951B, KM8951, KG8801G

KM8916

KM8801G, KM8901A, KM8901, KM8951B, KM8951, KG8801G

KM8951

KM8801G, KM8901A, KM8901, KM8916, KM8951B, KG8801G

KM8951B

KM8801G, KM8901A, KM8901, KM8916, KM8951, KG8801G

KWY54041

STR54041, STR59041, STR58041, HKD54041

KWY5412

STR5314, STR5395, STR5412, STR5418, HG5312, HG5313, HKD5412

LA5110

LA5112

LA5112

LA5112H, LA5112N

LA5112H

LA5112, LA5112N

LA5112N

LA5112, LA5112H

MC33066

MC34067

MC34067

MC33066

MC3520

UC3520

MC44603

MC44603A, MC44603P

MC44603A

MC44603, MC44603P

STK4060

IX4067CE, STK4090, STK4090S, STR4060, STR4090, STR4090S

STK4090

IX0467CE, STK4060, STK4090S, STR4060, STR4090, STR4090S

STK5325

STK5326

STK5326

STK5325

STK5338

STK5340

STK5372

STK5372H, STK5471

STK5372H

STK5372, STK5471

STK5391

STK5392

STK5471

STK5372, STK5372H

STK73010

STK7308, IX0308CE, STK7309, STK7310

STK7308

IX0308CE, STK7309, STK73010, STK7310

STK7309

STK7308, IX0308CE, STK73010, STK7310

STK7310

STK7308, IX0308CE, STK7309, STK73010

STK73508

STK7358, IX0689CE, IX0689CEZZ, STK7359

STK7358

IX0689CE, IX0689CEZZ, STK73508, STK7359

STK4090S

IX0467CE, STK4060, STK4090, STR4060, STR4090, STR4090S

STR40115B

STR-D4412, STR4015, STR4412, STR50103A, STR50115B, STR50213, STR50213M, STR51213, STR-D4512

STR40090

IX0256CE, IX0512CE, IX0465CE, IX0654CE, STR41090, 56A246, HKD41090

STR4060

IX0467CE, STK4060, STK4090, STK4090S, STR4090, STR4090S

STR4090

IX0467CE, STK4060, STK4090, STK4090S, STR4060, STR4090S

STR4090S

IX0467CE, STK4060, STK4090, STR4060, STR4090, STK4090S

STR41090

IX0256CE, IX0512CE, IX0465CE, IX0645CE, STR40090, 56A246, HKD41090

STR440

56A245-2, STR441, STR442, STR446

STR40115

STR-D4412, STR40115B, STR4412, STR-50103A, STR50115B, STR50213, STR50213M, STR51213, STR-D4512 &nb, sp;

STR4211

STR4211H, STR4060, STR4090, STR4090S, HKD4211

STR4211H

STR4211, STR4060, STR4090, STR4090S, HKD4211

STR441

STR440, STR442, STR446, 56A245-2

STR4412

STR-D4412, STR40115, STR40115B, STR50103A, STR50115B, STR50213, STR50213M, STR51213, STR-D4512

STR442

STR440, STR441, STR446, 55A245-2

STR446

STR440, STR441, STR440, 56A245-2

STR450A

STR451, STR452, STR454, STR455, STR456, STR514, HKD9502, IX0205CE

STR451

STR450A, STR452, STR455, STR456, STR514, HKD9502, IX0205CE

STR452

STR450A, STR451, STR454, STR455, STR456, STR514, HKD9502, IX0205CE

STR454

STR5312, HG5412, STR5313, STR5314, STR5395, STR5418

STR455

STR450A, STR451, STR452, STR455, STR456, STR514, HKD9502, IX0205CE

STR456

STR450A, STR451, STR452, STR455, STR514, HKD9502, IX0205CE

STR50103

STR40115, STR4412, STR50103A, STR50115B, HKD40115

STR50103A

STR40115, STR4412, STR50103, STR50115B, HKD40115

STR50115B

STR40115, STR4412, STR50103, STR50103A, HKD40115

STR50213

STR-D4412, STR40115, STR40115B, STR4412, STR50103A, STR50115B, STR50213M, STR51213, STR-D4512

STR50213M

STR-D4412, STR40115, STR40115B, STR4412, STR50103A, STR50115B, STR50213, STR40115B, STR4412

STR514

STR450A, STR451, STR452, STR455, STR456

STR5312

HG5412, STR454, STR5313, STR5314, STR5395, STR5418

STR5313

STR45312, HG5412, STR454, STR5314, STR5395, STR5418

STR5314

STR5395, STR5412, STR5418, HG5312, HG5313, HKD5412, KWY5412

STR5395

STR5314, STR5412, STR5418, HG5312, HG5313, HKD5412, HWY5412

STR54041

STR58041, STR59041, HWY54041, HKD54041

STR5412

STR5314, STR5395, STR5418, HG5312, HG5313, HKD5412, HWY5412

STR5418

STR5314, STR5395, STR5412, HG5312, HG5313, HKD5412, HWY5412

STR-S6709

STR-S6707, STR-S6708, STR-S6708A

STR51213

STR50213, STR50213M, STR51213M

STR51213M

STR50213, STR50213M, STR51213

STR58041

STR54041, STR59041, KWY54041, HKD54041

STR6020

STR6020S, HKD6020

STR6020S

STR6020, HKD6020

STR6308

STR-S6308

STR-6658

STR-6658B, STR-F6654LF53, STR-6658B

STR-6658B

STR-F6656, STR-F6654LF53, STR6658

STR81145A

STR81145C, STR83145LF55

STR8145C

STR81145A, STR83145LF55

STR83145LF

STR81145A, STR81145C

STR-D1706

STR-D1806, STR-D1706S, STR-D1806FA

STR-D1706S

STR-D1806, STR-D1706, STR-D1806FA

STR-D1806

STR-D1706, STR-D1706S, STR-D1806FA

STR-D1806FA

STR-D1806, STE-D1706, STR-D1706S

STR-D4412

STR40115, STR40115B, STR4412, STR50103A, STR50115B, STR50213, STR50213M, STR51213, STR-D4512

STR-D6008X

STR-D6009E, STR-D6009D

STR-D6009D

STR-D6008X, STR-D6009E

STR-D6009E

STR-D6008X, STR-D6009D

STR-D6601

STR-D6601M

STR-D6601M

STR-D6601

STR-F6626

STR-F6653

STR-F6653

STR-F6626

STR-F6654LF53

STR-F6656, STR-6658, STR-6658B

STR-F6656

STR-F6654LF53, STR-6658, STR-6658B

STR-G5653

STR-G8658

STR-G8658

STR-G5653

STR-S5471

STR-S5941

STR-S5941

STR-S5471

STR-S6707

STR-S6708, STR-S6708A, STR-S6709

STR-S6708

STR-D6709, STR-S6709AN, STR-S6709A

STR-S6708A

STR-S6707, STR-S6708, STR-S6709

STR-S6709

STR-S6708, STR-S6709AN, STR-S6709A

STR-S6709A

STR-S6709, STR-S6708, STR-S6709AN

STR-S6709AN

STR-S6708, STR-S6709, STR-S6709A

　　（二）常用集成电路的检测

　　1.微处理器集成电路的检测 微处理器集成电路的关键测试引脚是VDD电源端、RESET复位端、XIN晶振信号输入端、XOUT晶振信号输出端及其他各线输入、输出端。 在电路测量这些关键脚对地的电阻值和电压值，看是否与正常值（可从产品电路图或有关维修资料中查出）相同。 不同型号微处理器的RESET复位电压也不相同，有的是低电平复位，即在开机瞬间为低电平，复位后维持高电平；有的是高电平复位，即在开关瞬间为高电平，复位后维持低电平。

　　2.开关电源集成电路的检测 开关电源集成电路的关键脚电压是电源端（VCC）、激励脉冲输出端、电压检测输入端、电流检测输入端。测量各引脚对地的电压值和电阻值，若与正常值相差较大，在其外围元器件正常的情况下，可以确定是该集成电路已损坏。 内置大功率开关管的厚膜集成电路，还可通过测量开关管C、B、E极之间的正、反向电阻值，来判断开关管是否正常。

　　3.音频功放集成电路的检测 检查音频功放集成电路时，应先检测其电源端（正电源端和负电源端）、音频输入端、音频输出端及反馈端对地的电压值和电阻值。若测得各引脚的数据值与正常值相差较大，其外围元件与正常，则是该集成电路内部损坏。 对引起无声故障的音频功放集成电路，测量其电源电压正常时，可用信号干扰法来检查。测量时，万用表应置于R&TImes;1档，将红表笔接地，用黑表笔点触音频输入端，正常时扬声器中应有较强的“喀喀”声。

　　4.运算放大器集成电路的检测 用万用表直流电压档，测量运算放大器输出端与负电源端之间的电压值（在静态时电压值较高）。用手持金属镊子依次点触运算放大器的两个输入端（加入干扰信号），若万用表表针有较大幅度的摆动，则说明该运算放大器完好；若万用表表针不动，则说明运算放大器已损坏。

　　5.时基集成电路的检测 时基集成电路内含数字电路和模拟电路，用万用表很难直接测出其好坏。可以用测试电路来检测时基集成电路的好坏。测试电路由阻容元件、发光二极管LED、6V直流电源、电源开关S和8脚IC插座组成。将时基集成电路（例如NE555）插信IC插座后，按下电源开关S，若被测时基集成电路正常，则发光二极管LED将闪烁发光；若LED不亮或一直亮，则说明被测时基集成电路性能不良。