Month: July 2021
COF TAB REPLACEMENT TABLE
| COF | COF IC REPLACEMENT NUMBERS |
| 8159-CCBQ | NT39980H-C5256A 8159-ACBPU |
| 8656-CYOB | NT39538H-1272A |
| 8658-GCYOU | RM76730FA-603 |
| 8674-BCC96 | S6CG221-51 |
| 8157-ACBMX | 8157-BCBNM |
| 8159-CCBQ1 | 8159-ACBPU |
| 8157-RCY88 | NT39892H-C12H5B/NT39892H-C12H5F有灰阶线，一起换OK/RM927A1FF-61B |
| 8656F-C0YB | NT39538H-1272A |
| 8658B-CBH1 | 8651A-CBD7 |
| 8020-GBCGS | 8021A-CBD6 |
| 5253-BCBR3 | 5276-ACBR6 |
| 5223-FCBQU | NT39565H-C5253A |
| 8019-FCCA0 | S6C1162-52 |
| 8019-KCBCX | LH16B5D2 |
| 8020-A CH23C | S6C1127-51B |
| 8020-GCBJ4 | NT39646H-C5103A |
| 8031-DCBKO | NT39962H-C5107A |
| 8031-DCV17 | VSM21074A |
| D160132RNL-092 | S6C1125-65 S6C1125-61 |
| D160252NL-051 | S6C2792-52/54会短一点，如果出现线的话要一起换 |
| D160407NL-056 | D160407NL-055-C1-0A |
| D160253NL-051 | D160243NL-151，LS0360M1-C2LX |
| D160407NL-055-C1-0A | D160407NL-056 |
| D160418ANL-051 | RM92161FB-0AN |
| D160418ANL-054-C1 | RM92161FB-OAN（换一半） |
| D160418NL-054 | RM92165FC-0CC RM92161FB-OAN ？ |
| D160962NL-51 | NT39381H-C0265A NT39386H-C0265A D160975-051 |
| D160962NL-051 | NT39381H-C0265A |
| D160971NL-055 | NT39662H-C02D5D |
| D160974ANL-051 | RM92120FA-038 RM92122FA-058 NT39921H-C02B7H |
D160975NL-051 | D160962NL-051/D160975ANL-051/RM92122FA-058/NT3993H- C02F7A/D160418ANL-054-C1/RM92165FC-0CC/D160958NL/NT39921H-C02B7H/RM92120FA-038 |
| D160975ANL-051 | RM92120FA-038/D160994NL-054短接R33，R34 |
| D160975NL-51 | RM92122FA-058 |
| D160985NL-052(易坏) | 用NT39389H-C0255完美代换 |
| D160987NL-052 | S6C2A72-52U D160987NL-055 S6C2A72-52U |
| D160987NL-055 | D160987NL-052 S6C2A72-52U |
| D160994NL-051 | NT39931H-C02F7A D160994NL-054 |
| D160994NL-054 | D160994NL-051 NT39931H-C02F7A |
| D160998NL-053 | D160998NL-054-C1 RM92150FB-095 |
| D160998NL-053-C1 | RM92150FB-095 |
Remark: This table just for reference and keep update.
| D160998NL-054-C1 | D160998NL-053 |
| D160998NL-054-C1 | D160998NL-053 |
| LS0610BT1-C2LX | MT3725VB |
| LS08S6HH3-C2LX | LS08S6HHT1-C2LX |
| LS08S6HT1-C2LX | MT3728VC/LS08S6HT3A-C3LX/LS/LS08S6HH3-C2LX/LS08S6HT1-C3Lx |
| LS08S6HT3A-C3LX/ LS | LS08S6HT1-C2LX MT3728VC/VB LS08S6HT3A-C3LX |
| ls08s6ht1–c3ls | ls08s6ht1–c2ls |
| LS08S2M7-C3LX | SS8310-C1LX LS08S6HT3A-C3LX |
| LS08S6HT1-C3LS | LS08S6HT3A-C3LS/LS08S6HT3-C3LS/用MT3728VC代换的时候要一起换 |
| LS0896BD3-C5SX | DB7894-FL03X SS8402-C6LS完美代换 |
| LS0896BD3-CBLX | LS0896BD3-C5SX |
| LH16B5D2 | 8019-KCBCX |
| LH16DD07 | NT39990H-C6003A |
| LS0306M1-C5LX | LS0306M2-C1LX |
| LS08S2M7-C3LX | SS8310-C1LX/CILAEX/LS08S6HT3A-C3LS |
LS08S6HT3A-C3LS | LS08S6HT1-C2LX/LS08S6HH3-C2LX/LS08S6HT3-C3LS/MT3728VC |
| /LS08S6HT1-C3LS | |
| LS08S2SHEASH1-C1LX | SS8482-C1LV |
| LS08S2SHESH1-C4LX | S8481-C2LV |
| LS08S6HEH1-C4LX | DB7899-FL02U/LS08S6HEH1-C6LX S8481B-C1LV |
| NT39538H-C1272A | 8656-CYOB,8157-CCYOHD |
| NT39565H-C5253A | 5223-DCBPW |
| NT39610H-C2006A | MT3113VA |
| NT39658H-C1294A | 8033-GCYO7 |
| NT39809H-C1455 | NT39808H-C14A4A MT3102A-VE |
| NT39812H-C1261A | S6C27A7-51V |
| NT39911H-C1275A | 8033-DCYOE |
| NT39918H-C02K6A 长 | NT39918H-C02M2A |
| NT39921H-C02B7H | RM92120FA-038 RM92122FA-058 D160974NL-051 |
| NT39921H-C02B7B | RM92122FA-058/D160975ANL-051 |
| NT39981H-C02M2A | NT39918H-C02K6A |
| NT39931H-C02F7A | D160994NL-054 D160994NL-051 |
| NT39935H-C5213A | NT39935H-C5226A |
| NT39935H-C5226A | NT39935H-C5213A |
| NT39935H-C5254A | NT39980H-C5256A |
| NT39935H-L5206B | 8154-ECBL6 |
| NT39938H-1272A | 8656-COYB |
| NT39941H-C0217B | RM92150FC-0CC |
| NT39962H-C05D5D | D160971NL-055 |
| NT39941H-C02J4A | RM92160FB/RM92150FB-095 |
| NT39941H-C0217B | RM92150FB-095 |
| NT39658H-C1294A | 8033-GCY07 |
| NT39962H-C5107A | 8031-DCBKO |
| NT39980H-C5256A | 8159-CCBQ |
| NT39981H-C02J5C | NT39981H-C02J1C RM92160FE-OAD |
| NT39981H-C02J1C | NT39981H-C02J5C RM92160FE-OAD |
| NT39981H-C5428 | NT39981H-C0265A |
| NT39985H-C02M9A | RM92161FD-OAS |
| NT39985H-C02P1A | RM92161FB-OAN |
| NT39985H-C02M4A | LS0896BD3-CBLX |
| NT39986H-C0265A | D160962NL-051 |
| NT39986H-C5248A | 8157-CCBPP |
| NT39986H-C5265A | NT39986H-C5248A |
| NT39990H-C6003A | LH16DD07，SSD3258UR1 |
| NT39992H-C12A3A | 8157-CCY13 |
| NT39992H-C1279B | 8157-CCYOHD |
| NT39992H-C1279C | NT39992H-C1279A, NT39992H-C1279B/8157-RCY60/8157-CCYOHD/NT39892H-C12E2A/NT39812H-C1271A/ICN9305-01 |
| NT39338H-C2005A | MT3407VC |
| NT39386H-C5265A | D160962NL-051 |
| NT39540H-C5232A | S6CG248-51B |
| NT39573H-C6007A | SSD3273U2R4 |
| NT39610H-C2006A | MT3113VA |
| NT39646H-C5103C | NT39646H-C5103A |
| NT39658H-C1294A | 8033-GCY07 |
| NT39810H-C5215A | S6C27A7-52B/8157-CCBP4 |
| NT39812H-C1261A | S6C27A7-51V |
| NT39918H-C02K6A | NT39918H-C02M2A/NT65065H-C02T6A |
| NT39921H-C02B7H | RM92120FA-038 |
| NT39931H-C02F7A | D160994NL-054 D160994NL-051 |
| NT39935H-C5213A | NT39935H-C5226A |
| NT39935H-C5206B | 8154-ECBL6 S6C2710-84 |
| NT39941H-C0217B | RM92150FC-0CC |
| NT39941H-C02J4A | RM92160FB |
| NT39962H-C05D5D | D160971NL-055 |
| NT39962H-C5107A | 8031-DCBKO |
| NT39981H-C02J5C | NT39981H-C02J1C/RM92160FE-OAD |
| NT39985H-C02M9A | RM92161FD-OAS |
| NT39986H-C5257A | NT39828H-C5275A/IL13102K5CD1-S |
| NT39992H-C1279B | NT39992H-C1279A/NT39992H-C1279C/8157-CCY0HC |
| NT39825H-C6008A | SSD3256UR4 |
| NT39547H-C1277A | 8651-GCY08 |
| RM92160FG-OAF | RM92160FE-OAD（完美代替） |
| RM92161FA-OAM | RM92161FB-OAN |
| RM92161FB-OAN | RM92161FA-OAM D160418ANL-051 RM39985H-C02P1A NT39985H-C02M4A |
| RM92161FB-OAS | RM92161FE-OBO |
| RM92161FD-OAS | NT39985H-C02M9A NT39985H-C02M9A RM92161FF-0CO/OCC |
| RM92161FF-0C0 | RM92161FD-OAS NT39985H-C02M9A NT39985H-C02M9A |
| RM92161FE-OBO | RM92161FB-OAS |
| RM92165FC-OCC | D160418NL-054 RM92161FB-OAN RM96190FA-OAO |
| RM92165FH-OCL | RM92165FK-OCU |
| RM92165FK-OCU | NT39985H-C028A/RM92165FG-OCJ |
| RM92312FC-80B | RM92312FC-80D |
| RM92312FC-80D | RM92312FC-80B |
| RM92370FB-801 | RM92370FA-809 |
| RM92370FA-809 | RM92370FB-801/RM92370FA-819/810 |
| RM92161FB-0AS | RM62161FE-OBO |
| S6C2732-52 | S6C2732-52G/S6C2732-51 |
| S6C2732-52G | S6C2732-52 |
| S6C2732-61 | S6C2732-51H/AL7821-51B |
| S6C2741-81XN | S6C2771-04 |
| S6C2772-52 | S6C2775-51 S6C2775-21 S6C3101-53 |
| S6C2774-54U | 8154-ECBML |
| S6C274J-51U | S6C274J-56U/D160253NL-055 007 |
| S6C2792-61 | S6C2B91-64 |
| S6C2792-52 | S6C2775-51/ S6C2792-54 |
| S6C2792-54 | S6C2792-52 |
| S6C2A71-51 | S6C2A71-51G |
| S6C2A72-52U | D160987NL-052 D160987NL-055 |
| S6C27A7-51V | NT39812H-C1261A |
| S6C2B91-61 | S6C2B94-61 S6C2B91-63, S6C2B91-64 |
| S6C2B91-63 | S6C2B94-1 S6C2B91-61 |
| S6C2B94-61 | S6C2B91-61 S6C2B91-63 |
| S6C2B91-64 | S6C2B91-61 |
| s6c2b91-54b | S6C2B91-51B |
| S6C2B93-54 | DB7897B-FT08M |
| S6C2B96-53 | DB7893-FT10M |
| S6C3703-53G | S6C2B94-64 |
| S6CG221-51 | 8674-BCC96 |
| SS8303A-C2SS | MT3728VC |
| SS8303H-C2SS | LS08S6HT3A-C3LS/LS08S6HT3-C3LS/MT3728VC |
| SS8310-C1LX | LS08S2M7-C3LX |
| SS8310-C4LX | MT3717AVC |
| SSD3258UR1 | LH16DD07 |
| SS8303C-C2SS | SS8303H-C2SS |
LCD LED TV Faults which can be repaired by laser machine
The most frequently asked question is what are the faults which can be repaired by a laser machine?
The principle of laser repair machine for TV LCD panel inside circuit repairing means almost all faults caused by screen inside circuit are can be repaired by a laser machine. And laser machine also can repair some COF/TAB faults (instead of a bonding machine).
- Each Pixel is composited with 3 RGB original colors.
- Each color brightness is controlled by one COF line.
Each pixel is composited with RGB 3 original colors. Each color brightness is controlled by one COF line
Principle of laser machine:-
The principle of laser machine repairing is using the power of laser to change the circuit connection in glass.
Have two functions:
1. Break a wire
2. Connect two wires
In glass, usually have some spare wires for repairing.
In normal condition, there is an insulating layer between main wire and spare wire, main wire and spare wire is not connected.
If apply a proper laser pulse to the cross, can break the insulating layer, and the main wire and spare wire will be connected.
Solution: Connect to the same color wire
Step 1: Cut spare wire
Step 2: Connect main wire and spare wire
Now line 1 is connected to line 2, line will display same as line 2.
Though line 1 display is a little different from the original image, but can not be distinguished by eye.
Short circuit between two wires, just cut it with the laser.
For a broken pixel, just cut the power supply of this pixel, then the the pixel will become dark, and can not be saw by eye.
User laser machine to repair a vertical line on LCD LED screen
When come with a COF wire broken problem:
Change a new COF
Repair as Case 1
Method 1 advantage:
Perfect display after repairing
Method 2 advantage:
a. Fast repairing
b. No need consumable material, low cost.
LCD COF TAB BONDING PROCESS STEPS
- LCD/LED fault mark :
2) Glass and PCB fixation:
3) Tool for COF remove:
4) Hot gun parameter Setting:
Temperature Range: 330 degree.
Air flow of hot gun: 2-3.
5) COF disassembly:
6) ACF remover liquid G750 apply on COF
Don’t touch the liquid with your finger or skin. If the liquid splash to skin, please washing with a lot of water. You can wear gloves to protect your hands.
7) ACF removing liquid chemical reaction :
8) Wash in simple water :
9) Old COF cleaning :
1. Put the COF on a clean glass table;
2. Fix the COF by left hand finger (don’t touch the chip on COF, will damage it);
3. Right hand take a clean peace nano sponge with acetone;
4. Clean the ACF follow the direction of pins from inside to outside of COF. Please note only clean in one direction, don’t clear in vertical direction of the pin, or from outside to inside of COF.
10) Glass cleaning :
• Fix the panel little bit outer of the table.
• Put left hand on the panel to support it take a clean peace nano sponge with IP ;
•Clean vertically with nano sponge;
•Repeat step 3 and step 4 until the Glass is clean.
11) PCB cleaning :
12) Glass checking :
13) glass cleaning under microscope :
14) COF checking :
1. Check if there is residual ACF or dirty things on the pins, then scrape them by cotton swab carefully.
2. If the pins curved or broken, please drop this COF.
15) New COF cutting :
1. Before cutting, please check the cutter if it is undamaged and sharp;
2. Put the COF reel under the cutter at properly position;
3. Cut the COF with fast speed;
4. After cutting, check the COF with microscope;
5. If COF not very clean, clean it with electrostatic cloth and acetone.
16) ACF model :
ACF should be stored in low temperature (like store in fridge), before open ACF should in freezing chamber, after open should in cold closet, and sealing with a hermetic bag. Waiting 15 min for thawing after pick ACF out from the fridge. Please noted the valid date of the ACF, which wrote on the ACF label. ACF should not be used when expired. Put ACF back to the fridge after every day work finished.
17) ACF attaching part 1 :
When attaching, fix COF on glass table by left hand, put ACF on COF pins with a tweezers, and make sure a perfectly alignment between ACF and COF pins.
After attaching, pre-heating the ACF with a T type iron, this will make a good connection between ACF and COF, prevent ACF fall from the COF when moving.
18) ACF attaching part 2 :
19) Panel moving and placing :
Please note should put two hands in the center of the ITO. Make sure the ITO is smooth and steady.
Take care when placing ITO on platform, don’t let it strike the quartz holder and other part of the machine.
For big ITO, can move it with suckers.
20) Bonding machine operation – parameter selecting :
21) Bonding machine operation – panel alignment :
22) Bonding machine operation – camera adjusting :
23) Bonding machine operation – COF fixture :
24) Bonding machine operation – COF adjustment on XYZ direction:
25) Bonding machine operation – Teflon tape:
The bonding pressure should between 2.0Mpa~4.0Mpa, the pressure can be setting by the regulating valve.
26) Bonding machine operation – alignment image:
For new COF, alignment is more easy;
For used COF, is a little hard for aligning, because used COF will curved, shrink…
27) Bonding machine operation – double start:
During the automatic bonding process, you can press the emergency button at any time to stop the process.
28) Bonding machine – automatic Bonding :
If OK, please do next step, PCB side bonding.
29) Bonding machine – PCB side alignment :.
•The head should cover full bonding area.
•Align the PCB and COF pins, can assistant by a magnifying glass. There are marks on PCB and COF will help alignment.
30) Bonding machine operation – put silicon tape :
The length of silicone tape should longer than COF length.
31) Bonding machine operation – PCB side automatic bonding :
During the automatic bonding process, you can press the emergency button at any time to stop the process.
32) Testing after Bonding :
If not repaired, analyze the reason and repair again.
Usually, bright-line means short circuit; dark line means of the circuit.
Get More Information: led lcd panel repair training
Bonding Machine model KD891 version3.0 is ready to dispatch.
Bonding machine KD891 version 3.0 will send to Oman:
Bonding Machine model KD891 version3.0 is ready to dispatch. We will send this machine to Oman.
May 2021
Bonding machine model KD891 send to Dubai:
Today evening the KD891 binding machine is send to Dubai. With all accessories machine body packed and loading truck. This machine small and easy to install. He take online training from us.
Mar 2021
KD891 version 2.0 single head bonding machine send to Nepal:
Bonding machine model number KD891 version 2.0 is send to Nepal. This machine have XY moving Microscope feature. The machine body packed.
Jan 2021
KD891 version 2.0 bonding machine is send to Philippines:
Date Today afternoon the KD891 version bonding machine send to Philippines. Photo is take when machine body package loading truck.
Dec 2020
Single Head Bonding Machine Model KD891 version 3.0 send to Bangladesh:
Today morning KD891 version 3.0 bonding machine is send to Bangladesh. With all accessories this machine body packed in wooden box.
Nov 2020
Single Head Bonding Machine KD891 version 3.0 send to Jordan:
Bonding machine version 3.0 model send to Jordan. This model have 2 main features one is XY moving microscope in back side and second is front camera for PCB track matching.
LCD LED TV FAULT WHICH CAN BE REPAIR BY BONDING MACHINE
The most frequently asked question is what are the faults which can be repaired by a bonding machine?
The principle of a bonding machine is for COF/TAB changing, which means all faults caused by COF/TAB are can be repaired by a bonding machine for TV panel repair.
Here are some sample faults which can be repaired by a bonding machine:
