Todays deals on Schottky Diode?

30BQ015TR IR SCHOTTKY DIODE T/R 8000pcs 30BQ015 NEW! $1,499.95

1,000 PCS SCHOTTKY COM CATHODE DIODE #83CNQ100A $1,000.00

500 PCS SCHOTTKY COM CATHODE DIODE 83CNQ100ASM 100V/80A $750.00

500PCS SCHOTTKY COM CATHODE DIODE #82CNQ030ASM 30V/80A $750.00

3K PCS SCHOTTKY COMMON CATHODE DIODE #20CTQ045 45V/20A $600.00

SGL41-20 GI VISHAY SCHOTTKY DIODE T/R 5000pcs NEW! $399.99

B320-13 VISHAY SCHOTTKY DIODE B320 T/R 10800 pcs $399.00

Schottky Diode for Solar Panels 12A , 40V ( Lot of 500 ) $374.44

5000 PC’S P/N 11DQ09TR 90V 1.1A Schottky Discrete Diode $349.99

800 PC’S P/N MBRB2545CT Schottky Diodes Rectifiers 30A 45V $244.99

HP / Agilent 33330C Low-Barrier Schottky Diode Detector, 0.01 to 26.5 GHz w/ Opt $224.95

2000 PCS BAT54S SOT-23 Schottky barrier double diodes $223.99

SR5100 100V 5A Schottky Rectifier Diode SB5100, x1000 $220.00

1000 PCS MBRS360T3G SMC MBRS360 B36 Schottky Diode /FREE Registered Mail $215.99

Reel of 5000 DIODE SCHOTTKY 40V 1A SMA MBRA140T3G ROHS $199.99

2000 PCS SB560 5.0A 60V SCHOTTKY BARRIER DIODE SR560 NEW /FREE Registered Mail $209.99

Agilent 33330C Low-Barrier Schottky Diode Detector OPT-6 BRAND NEW $199.95

3000 Alpha Ind. SMS3923-003 20V 1mA SMT Schottky Diodes $199.99

HP Dual RF Schottky Barrier Diode HSMS-2804, Qty.3000 $204.99

2000 PCS SS34 DO-214AC 1N5822 SMD Schottky Barrier Diode /FREE Registered Mail $199.99

1500+ Diodes Inc BAT54WS SMT Schottky Barrier Diodes $189.99

500 PCS 1N5825 IN5825 5.0A Schottky Rectifier Diodes /FREE Registered Mail $175.99

8470B Low-Barrier Schottky Diode Detector, 10 M to 18G $150.00

Lot 2500 MBRS260T3G DIODE SCHOTTKY 60V 2A SMB $0.05/PC $125.00

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3000 M/A Com MA4CS SOT23 Schottky Diodes $149.99

700PC SS12 1N5817 SMD DIODE 1.0A SURFACE MOUNT SCHOTTKY $153.99

5000 PCS 1N5819 DO-41 DIODE 1.0A SCHOTTKY BARRIER /FREE Registered Mail $139.99

STPS61H100CW SCHOTTKY Rectifier 100V 30A LOT of 120 $139.00

5000,1N5819 1A 40V Schottky Barrier Rectifier Diode,&23 $138.00

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HP/Agilent 33330B Low-Barrier Schottky Diode Detector, 0.01 to 18 GHz, 3.5mm/SMC $119.00

HP 8470B Low-Barrier Schottky Diode Detector 10M-18GHz $99.00

900+ Diodes Inc BAT54WS SMT Schottky Barrier Diodes $99.99

Lot of (1120) Taped 1N5820-T, 20V/3A, Schottky Rectifier Diodes $79.99

1N5822 3 Amp 40V Schottky Barrier Rectifier,Diode,x1000 $95.00

4104 ON Semiconductor MMBD301LT1 Diode Schottky NEW $94.99

1N5821 On Semi Schottky Diode 3A 30V 1500 pieces reel $79.99

3000 PC’S P/N BAT54S DIODE SCHOTTKY 30V 200MA SOT-23 $79.99

MBRS140T3 DIODE SCHOTTKY 40V 1A Reel 700 $70.00

LOT OF 10 SD51 SCHOTTKY RECTIFIER DIODE 60A 45V NEW $79.99

1000p 1N5822 40V 3A SCHOTTKY DIODE FREESHIP NEW $78.99

6500 ZXSDS2M832TA tape reel DIODE SCHOTTKY DUAL 60V 1.65A 8-MLP package $65.00

MOTOROLA SD51 SCHOTTKY BARRIER RECTIFIER DIODE 60A 45V $49.90

100PCS 10AMP Bypass / Blocking Diode for DIY Solar Cells Panel, 10SQ045 Schottky $55.00

3A121A,AA121A Microwave GaAs Schottky Detector Diode 40GHz Oty: 10 $42.00

1N5819 1A 40V Schottky Barrier Rectifier Diode, x 2500 $53.50

Lot of (2900) SK14-TP, 1A/40V, DO-214AA, Schottky Rectifier Diodes $39.99

1N6098 40V 50A Schottky Discrete Diode BY MOT LOT OF 2 $52.00

100 Amp Schottky Rectifier, Diode, IR 100BGQ015, x10PCS $49.99

20 PCS D83-004 ESAD83-004 SCHOTTKY BARRIER DIODE TO-3P $49.99

50 PCS STPS20L60CT STPS20L60 POWER SCHOTTKY RECTIFIER ST New TO-220 $49.99

Motorola MBR735 Schottky Barrier Diode 7.5amps 35volt TO-220AC pkg (LOT OF 100) $43.50

1N5711, Schottky Rectifier Diode, 15mA 70V, Qty 500 $47.69

LOT 50 pieces MBR745 SCHOTTKY 7.5A – 45V RECTIFIERS DIODES $40.00

3000 PC’S P/N BAT54 DIODE SCHOTTKY 30V 200MA SOT-23 $39.99

Free Shipping New 1N60P 1N60 SCHOTTKY DIODE 45V SALE 1000 Pcs Pack $44.49

500 1SS106 Silicon Schottky Barrier Diode DO-35 as 1N60 $34.40

1000pcs 1N5822 40V 3A SCHOTTKY DIODES Free Shipping $40.00

20 pieces – SB2100 Schottky Barrier Diode 100V 2A NEW ORIGINAL $40.00

10 pieces – SB3200 Schottky Barrier Switching Diode 200V 3A Genuine NEW ORIGINAL $40.00

100 PCS 1N5824 IN5824 5.0A Schottky Rectifier Diodes $39.99

500p 1N5822 40V 3A SCHOTTKY DIODE FREESHIP NEW $39.99

100 PCS 1N5825 IN5825 5.0A Schottky Rectifier $39.98

100 pcs Schottky Diode SR540 5A 40V Vd=0.6V@5A RoHS $31.80

100 pcs Schottky Diode SB340 3A 40V Vd=0.55V@3A RoHS $31.80

100 pcs Schottky Diode SR560 5A 60V Taiwan $31.80

SB5100 DIODE, SCHOTTKY, 5AMP 100V…Pack of 30 $25.46

1000 PCS 1N60P DO-35 1N60 Schottky Barrier Diode $38.99

500pcs 1N5822 40V 3A SCHOTTKY DIODE FREESHIP NEW m $38.99

25 PC’S P/N TSR845 8A Schottky Rectifier DO-201AD DIODE $29.99

50 PC’S P/N 50WQ06FN DIODE SCHOTTKY 60V 5.5A D-PAK $29.95

1 used “INTERNATIONAL RECTIFIER” 163CMQ100 160A 100V Schottky Diode. $32.88

500 PCS AGILENT HP QSCH-1956R SCHOTTKY 2.5GHZ RF DIODE $35.00

SR5100 100V 5 Amp Schottky Rectifier Diode SB5100, x100 $35.00

Rectifier -50 ea – DIODE SCHOTTKY 45V 20A – 40CTQ045 $25.00

Reel of 1000 On Semiconductor MBRS130LT3G Surface Mnt SMT Schottky Diode – NEW $20.00

SALE New 1000 x 1N5819 IN5819 SCHOTTKY BARRIER Diode 1A 40V DO-41 Free Shipping $32.68

1000,1N5819 1A 40V Schottky Barrier Rectifier Diode,&23 $31.99

250 PCS SB560 5.0A 60V SCHOTTKY BARRIER DIODE SR560 NEW /FREE Registered Mail $31.99

500 PCS 1N5822 IN5822 3A 40V SCHOTTKY BARRIER RECTIFIER NEW $31.99

Free Shipping New 1000 Pcs x 1N5819 SCHOTTKY BARRIER DIODE 1A 40V SALE $31.68

250 PCS SB560 5.0A 60V SCHOTTKY BARRIER DIODE NEW $30.99

Lot of 85 MOTOROLA MBR1035 SCHOTTKY DIODE $24.99

LOT 45 pieces MBR745 SCHOTTKY 7.5A – 45V RECTIFIERS DIODES $24.95

30BQ060 DIODE, SCHOTTKY 3AMP 60V SMC…Pack of 40 $18.10

500 PCS S4 1206 1N5819 MMBD5819 SCHOTTKY BARRIER DIODE $29.99

1000 PCS 1N5817 DO-41 IN5817 1.0A SCHOTTKY BARRIER RECTIFIER DIODES $29.99

50PCS 10SQ045 10A 45V Schottky Diodes, for Solar Panel / Wind, Rectifier, 10AMP $29.99

500 PCS SS14 DO-214AC 1N5819 SMD Schottky Rectifier NEW $29.99

1N6098 40V 50A Schottky Discrete Diode BY MOT $29.95

500 pcs. DIODES# B130LB-13, DIODE SCHOTTKY 30V 1A SMB $29.74

50 PCS 50 VOLT 10 AMP SCHOTTKY DIODES SOLAR PANEL WIND $28.99

Motorola MBR735 Schottky Barrier Diode 7.5amps 35volt – TO-220AC pkg (LOT OF 50) $23.00

10 PCS D83-004 TO-3P ESAD83-004 SCHOTTKY BARRIER DIODE /FREE registered mail $27.99

1000 PCS 1N5819 DO-41 DIODE 1.0A SCHOTTKY BARRIER $26.99

250 ON Semiconductor, DIODE SCHOTTKY, 30V, 1A SMA # MBRA130LT3 “NEW” $24.00

WHOLESALE New 500 Pcs x1N5818 Diode Schottky 1A 30V DO-41 Free Shipping $26.47

BAT54 Schottky Barrier Diode SMD (500 pieces) $20.00

250 PCS SS34 DO-214AC SMA 1N5822 SMD Schottky Barrier Diode NEW $25.99

Schottky Diode Questions

HP F1723 LCD Monitor Repair – No Power

This HP1723 17″ LCD Monitor came in with the complaint of no power. Upon further inspection I could hear a soft intermittent sound coming from the both front speakers. Since the speakers can produce some sound, this indicates that the power supply should be working fine and it may be some bad components located at the secondary side that had caused the power supply voltage to drop not to start. The power LED doesn’t light because the signal was coming from the Microcontroller (MCU) IC. This means that if the MCU did not receive the right voltage from the power supply, it will not send output voltage to the power LED.

As usual, to open LCD Monitor cover , one have to be careful of not scratching or leaving a mark on the plastic casing otherwise the customer may not want to accept his or her broken or badly scratch LCD Monitor. Once the cover have been removed, you have to remove another four screws (two at each side) in order to take out the power/inverter and the Main board. For some LCD Monitors, the moment you have open the cover, you could easily remove all the boards.

The power supply and the inverter circuit are in one board while the Main board and the audio board are in separate board. As mentioned before in my previous articles, I do not immediately begin to troubleshoot and repair any board unless I have scanned all the components with my eyes first. The power supply/inverter board look very new and the most obvious sign that I could see was two filter capacitors (1000uf 16 Volt) had a slight bulge on top of its casing. I believe these bulged electrolytic capacitors that had caused the power supply not to function properly. I have checked all other e-caps too but all found to be good.

Usually whenever a filter capacitor located at the secondary side of switch mode power supply (SMPS) have a too high ESR value, the voltage will drop more than half causing many circuits won’t work. Since I already found the bad e-caps, I have to be certain that the secondary diodes (this LCD Monitor is using Schottky diodes) don’t go faulty or leaky too. Upon checking the Schottky diodes (part number are SRF20100C and SP10150) I found both of them to be working fine. Replacing only the two bad e-caps with a good one solved the LCD Monitor problem.

Now get this, if you want to be good in any electronic equipment repair, if possible analyze other circuits too. That means if you every time replace only the fuse and the bridge rectifier you won’t learn anything beyond that problem and you will get bored easily. Let’s take my case for example, after the replacement of the capacitors I will usually analyze other circuits too like finding out what kind of part numbers certain components are using, which type of the inverter circuit is belong to i.e. Buck Royer or direct drive?, why each backlight circuit are using four ballast capacitors?, How many backlights the LCD Monitor is using, what is the inverter IC part number, what is the supply voltage to the inverter IC? How many LED bar lighted up when test on the secondary winding of the high voltage transformer? What would happen if I pull out one of the backlight (will it still work or shut down?). What is the brightness line voltage if set to minimum and maximum? You have to answer all of these questions if you want to be good at LCD Monitor repair. You can apply this kind of questions on other electronic equipment too. This is a continuous process of learning how to be good in electronic repair.

I don’t want you to replace caps or fuse everyday without knowing how other circuits function or what are the components used in other circuits. Although to analyze other circuits take you lots of time but I can guarantee you that the time you have spent are worth it. You won’t be able to go far if you have set your thinking by just changing components and not knowing the surrounding. If you want to improve in electronic repair then you need a change of mindset in you and only you yourself can make the different! Try this approach and I believe troubleshooting electronic or LCD Monitor repair will never be the same again. Have a great and a fantastic year!

About the Author

Find out more at the links below. You will be very surprised to discover that LCD and Electronic Component Repairs can make thousands of dollars even for a novice. You can find out the repairing secrets.

Find out How to Repair Any LCD Monitor – It is a breeze!

Learn about Secrets of Electronic Repairs.

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