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I need a comprehensive datasheet fot the TDK Converter Model CBK-2415SFE. I need to know the permitted range of Input Voltage and if is there a value of undervoltage lockout voltage (UVLO). ie I need to know if there is a value of input voltage, below which the output voltage is zero, and if so, what is the value of this voltage? Thank You!. Peter Gill. PS - I do realise that the CBK-2415 is no longer in production but I still need the information. Thanks again

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The O/P capacity for this series is 1.5 W. It uses 24 V as an input and it produces an O/P of 15V.
Here is a link to the datasheet for cbk tech specs. As far as working of this DC converter in order to give correct O/P the variation of Input voltage is + 2V .

Posted on Oct 08, 2010


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Code 21,43,and 42

You have two oxygen sensors but 21 is upstream sensor. This is the sensor between engine and catalytic converter. There is three possible problems that it could be.
1 oxygen sensor input voltage maintained above the normal operating range.
2 no signal at 02 2/1 sensor
3 oxygen sensor input voltage sustained above thenormal operating range. What all this means is you need to replace the sensor.
when getting the replacement this is your O2 2/1 sensor.

May 13, 2013 | 1996 Jeep Cherokee Country



Service Menu StructureThe service menu has three items: display, calibre and version 2.1 Display Display item has seven options:
a- Panel
Panel option gives information about the current panel resolution. It is a read only option and can not be set.
b- Power on time
Power on time gives information about the last update time of the SW running. It is a read only option and can not be set.
c- Backlight on time
Backlight on time option reserved.
d- Scart prescale
Scart prescale option sets the prescale values for the input sounds entering the scart input of the MSP(Micronas Sound Processor). Changing this value you can adjust the level of the output sound going to loudspeakers for all the sources except the Tuners. The range is between 0 and 100.
e- nicam prescale
Nicam prescale option sets the prescale values for the Nicam standard sounds for tuner inputs. Changing this value you can adjust the level of the output sound going to loudspeakers for Nicam sounds entering the analog sound input of MSP. The range is between 0 and 100.
f- fm/am prescale
fm/am prescale option sets the prescale values for the FM/AM standard sounds for tuner inputs. Changing this value you can adjust the level of the output sound going to loudspeakers for FM/AM sounds entering the analog sound input of MSP.
The range is between 0 and 100.
g- Agc(Automatic Gain Control) adjust
Agc adjust option sets the input voltage going to IF decoder AGC pin. Changing this value you can adjust this voltage for optimum Tuner performance. The range is between 0 and 31.
h- R/G/B Brightness/Contrast:
These are used for color bias adjustment. The range is Between 0 and 255
Calibrate item has nine options:
a- video format
Video format option force the video format to the desired format. Selectable formats are Auto, Pal, NTSC and SECAM.

Electronics Equipment Repair Center

Ajin Gopakumar Google

on Feb 16, 2015 | Beko 17WLB450S 17 in. LCD TV

1 Answer

I need help asap 2003 Expedition code p0171 and code p0712 i have and idea of the 1st code but whats the secound code i really need help i dont want to take it to a shop where there going to charge me alot...

P0700 Transmission Control System

P0701 Transmission Control System Range/Performance

P0702 Transmission Control System -Electrical

P0703 Torque Converter/Brake Switch B Circuit

P0704 Clutch Pedal Position Switch -Circuit Malfunction

P0705 Transmission Range Sensor/Switch Circuit Malfunction (PRNDL Input)

P0706 Transmission Range Sensor/Switch Circuit Range/Performance

P0707 Transmission Range Sensor/Switch Circuit Low Input

P0708 Transmission Range Sensor/Switch Circuit High Input

P0709 Transmission Range Sensor/Switch Circuit intermittent

P0710 Transmission Fluid Temperature Sensor Circuit

P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance

P0712 Transmission Fluid Temperature Sensor Circuit Low Input

P0713 Transmission Fluid Temperature Sensor Circuit High Input

P0714 Transmission Fluid Temperature Sensor Circuit Intermittent

P0715 Input/Turbine Speed Sensor Circuit

P0716 input/Turbine Speed Sensor Circuit Range/Performance

P0717 Input/Turbine Speed Sensor Circuit No Signal

P0718 Input/Turbine Speed Sensor Circuit Intermittent

P0719 Torque Converter/Brake Switch B Circuit Low

P0720 Output Shaft Speed Sensor Circuit

P0721 Output Shaft Speed Sensor Circuit Range/Performance

P0722 Output Shaft Speed Sensor Circuit No Signal

P0723 Output Shaft Speed Sensor Circuit Intermittent

P0724 Torque Converter/Brake Switch B Circuit High

P0725 Engine RPM Input Circuit

P0726 Engine RPM Input Circuit Range/Performance

P0727 Engine RPM Input Circuit No Signal

P0728 Engine RPM Input Circuit Intermittent

P0729 Gear 6 Incorrect Ratio

P0730 Incorrect Gear Ratio

P0731 Gear 1 Incorrect Ratio

P0732 Gear 2 Incorrect Ratio

P0733 Gear 3 Incorrect Ratio

P0734 Gear 4 Incorrect Ratio

P0735 Gear 5 Incorrect Ratio

P0736 Reverse Incorrect Ratio

P0737 TCM Engine Speed Output Circuit

P0738 TCM Engine Speed Output Circuit Low

P0739 TCM Engine Speed Output Circuit High

P0740 Torque Converter Clutch Solenoid Circuit

P0741 Torque Converter Clutch Solenoid Circuit Performance or Stuck Off

P0742 Torque Converter Clutch Solenoid Circuit Stuck On
P0743 Torque Converter Clutch Solenoid Circuit Electrical
Now i dont know a lot about automatics especially modern ones with all this fancy electronics thats used nowdays but i think its a fault with the temperature sensor for the gearbox.But where its located and what it looks like i have no idea it could even be mounted inside the gearbox .Sorry not a very good answer from a mechanic but?? very few of our europeon cars come with auto transmission .Evan when i do know whats wrong i cannot buy the parts for the gearbox as only re-con boxes supplied by the dealer so best advice is to try a specialist in auto box repairs only .PS some of my best students when i used to teach mechanics many moons ago were the girls so no excuses like iam only a girl please

Apr 22, 2013 | Cars & Trucks

1 Answer

Can I use voltage converter with laptop?

it's a definite maybe putting one of the matching plugs to match up the prongs is fine. most laptops will work on a wide arrangement of voltages from 90 to 265 vac. check underneath the power adapter for your laptop, and see what is states about input voltage range. IF it says that it's ok, then you can use the adapters for that purpose. If not, then it's not a perfect solution. send along the pc model number if that helps and then we'll confirm this suggestion.

May 19, 2012 | Computers & Internet

1 Answer

Hi Ajin, I have a LG RD-JT52 Projector which I

HI David,
Sorry for the late replay first of all. I dont have the service manual with me. So i need the service manual for assist you. One more thing is You will not be able to connect the led directly to the power supply of your projector. For that you need Buck converter to connect in between the led and power supply. Normally leds are of voltage between 1.8V to 3V range. That will be mentioned in the PDF datasheet of the LED. The tearm BUCK means to reduce the voltage From the applied voltage to the range of LED working voltage. If not the led will burn out. You didnt mentioned about is the buck converter is there or not . If its there i want to know the input voltage range of the Buck converter. If it is not there, sent the service manual i will check out and tell you what type of buck converter you need. And how to replace with the LED if it possible. My email address is

Jan 15, 2012 | Office Equipment & Supplies

1 Answer

Having trouble turning my Tv on,have to turn it on and off/plug and unplug for a while to get pic and sound.Can you help?

Good day!

The problem of your TV could be the power supply.

Please follow this steps on how to fix that problem

  1. Remove the back cover of your TV.
  2. Try to look at the power supply board (it usually directly connected to the power cord)
  3. Plug-in your TV and power it ON to perform a voltage data.
  4. Check the input voltage of the power supply.It should have 110vac or 220vac it depends the input voltage of your TV that comes on the outlet.Use multimeter tester (range in AC)
  5. If the input voltage of the power supply doesn't have a reading,the power cord is defective you need to replace it.
  6. If the input of the power supply have 110vac or 220vac.Please check the output voltage of the power supply using your multimeter tester (range in DC).Normally it should have 5vdc for the system board,12vdc for the audio system and 24vdc for the inverter board (back-light).Also look for the leak/bulged on the top capacitor.If any replace it with the same type,ratings and value.
  7. If the you have done all procedures above and you have found any defects and the output voltage are complete.The problem could be the the system board or main board of your TV.This is not for D.I.Y because the parts are surface mount and its very sensitive.If the problem is main board you have to replaced it,buy a new main board its available at the market.
  8. When the output voltage of the power supply doesn't have reading,please check the following
  • Fuse---look if it is busted
  • Power transistor----If it is shorted (range in diode test)
  • Resistor----If it is open or change value (range in ohms)
If you found any defective parts replaced it with the same type,ratings and value.

I hope this solution will be helpful.Thank you and good luck.
Don't forget to rate my answer thank you.

May 09, 2011 | Televison & Video

1 Answer

The volume is messed up. I can turn my TV up all the way and put my ear next to the speakers and barely hear a faint voice. The TV itself is fine though and its not the DvD I'm using, I've switched it a...

You will probably need instruments (voltmeter, oscilloscope) to track down this problem.

At first I was going to suggest there is a fault in the audio buffer amplifier, but the only way that would be the case is if it is the bias circuitry inside a chip shared by both the left and right sound signals, or a power supply problem. The other possibility is the voltage reference for the Digital-to-Analog Converter (DAC).

How it works: the DAC gets the digital audio information from the DVD data processor. It generates an output voltage that is a fraction of the voltage reference value. For example, suppose the voltage reference is 2.5 Volts, and the audio data for the right channel is a 1 followed by fifteen 0's (half of full scale, which is sixteen 1's). The audio DAC should produce 1.25 Volts on the right channel. The audio DAC is almost certainly a dual channel device, and uses one voltage reference for both. If the voltage reference is putting out a very low voltage because it is bad or overloaded by another part, you would get the symptom you are having.

What to look for: identify the audio buffer amplifier IC (trace the circuit back from the sound output jacks). While a DVD is playing, use an oscilloscope to compare the input waveform with the output. You will probably have to search for and download the datasheet for the amplifier IC so you can see where the left and right input waveforms go in. If they are the same amplitude, or the output is larger than the input, the amplifier is probably OK. If not, check the voltages on the other pins on the chip to make sure they are correct. In particular, look at the voltage on the pin labeled "Vcc" or "Vdd" on the datasheet. It should be the same as one of the voltages printed by the connectors coming from the power supply board (give or take several tenths of a volt). If it isn't you'll need to check the power supply voltage with an oscilloscope to see if you have a bad capacitor. It is common for the first capacitor in a power supply filter to fail while the second one is good. This can produce a low voltage output that may still look like a clean straight line on the scope. However, for an audio amplifier, the result would be a low-amplitude, distorted sound.

If all is well with the audio amp, you will have to find the audio DAC chip. Start by downloading its datasheet and identifying the voltage reference input. Measure the voltage there. If the DAC has an internal voltage reference, look for a pin that provides this voltage externally.

Cautions: the laser in the DVD player can cause permanent eye damage if it is accidentally viewed directly. If the player mechanism does not have a cover built into it, put a sheet of opaque material (e. g., cardboard) over the DVD drive while you work on it. Keep your fingers away from the power supply, especially the high voltage section where the power cord comes in (often outlined on the power circuit board with white or black dashed lines, bridged only by transformers and several small parts). Get an anti-static wristband, put it on and connect the lead to the metal case of the DVD player. This is so any static electricity you build up in your clothing won't destroy parts in the DVD player. The transistors inside the integrated circuits, especially the data processor and DAC, are very delicate, and can be ruined by a discharge too small for a human to feel as a shock.

This is probably a "hobbyist" repair job. It's my understanding that this model is worth under $35, and most professional technicians want a minimum of $50 just to look at it. If you get lucky, you may find another unit of the same model that is no longer reading discs (try your local electronics recycler). You can swap the mechanism or main board with that unit to get one working (observe anti-static precautions with both parts - the laser circuit is also vulnerable to electrostatic discharge).

Dec 05, 2010 | Philips Magnavox DVD Player MWD200F

2 Answers

Power supply HP-A3108F3P Line rectified voltage is good, 310 V. No output voltages, no voltage on UC3843, no oscillation. Switching Mosfet is ok. Need help, thanks.

That could be a problem on secondary side. Shorted rectifier diode.

Please do check start up resistor of uc3843, I think its on pin 7 with 110Kohms or 56Kohms value for 220VAC or 110VAC supply input respectively. Open or change value, it is a fusible resistor. If open do check other components for defects. Don't substitute a common resistor on this one. Datasheet could help you alot.

A word of warning, the voltage may bite and enough to kill. So take necessary precaution, if in doubt let the tech handle it. Or buy a new one.

Oct 18, 2010 | IBM HPA3108F3P 310Watt Power Supply

1 Answer

I need all the engine diagnostic codes for a 94 plymouth sundance

11 Timing belt2.gif skipped 1 tooth or more from initial learned value, Intermittent loss of either camshaft or crankshaft position sensor, No crank reference signal detected during engine cranking
12 Direct battery input to PCM/ECM was disconnected within the last 50 key-on cycles (normal)
13 No change in MAP from start to run
14 MAP sensor voltage too low
15 No vehicle speed sensor signal
17 Closed loop temp not reached or engine cold too long
21 02s sensor problem (oxygen sensor), upstream or down stream
22 Engine coolant temp sensor out of range
23 Intake air temp sensor out of range
24 Throttle Position sensor out of range
25 Idle air control motor circuits, target idle not reached (+/- 200),vacuum leak found
27 Injector control circuit
31 Evap purge flow monitor failure or evap solenoid circuit
32 EGR system failure
33 A/C clutch relay circuit
34 Speed control Solenoid circuits
35 Rad Fan control relay circuit
37 Torque converter clutch solenoid CKT or park/neutral switch failure
41 Generator field not switching properly
42 Fuel pump relay control ckt, Auto shutdown relay control ckt, No ASD relay output voltage at PCM, Fuel level sending unit volts out of range, Fuel level unit No change over miles
43 Multiple/ single cylinder misfire
44 Battery temp sensor volts out of range
46 Charging system voltage too low
51 Fuel system lean
52 Fuel system rich
53 Internal control failure
54 No Cam signal at PCM
55 End of error messages (If you get this only, no errors were found)
62 PCM failure SRI mile not stored
63 PCM Failure EEPROM write denied
64 Catalytic Converter Efficiency Failure
65 Power steering switch failur

Jul 08, 2009 | 1994 Plymouth Sundance

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