I think diode D23 is defect, but I cannot see any number on it. Please advise

Diodes do not have a resistance. They have a forward bias current and a reverse voltage limit. There should be a number on the device for a google x-reference.

D23 is a transient voltage suppressor. Code: 1.5KE51A

I had to replace that on one of mine. It is not a regular diode. P6KE51A Transient Voltage Suppression (TVS) Diode. That is the part # on the USA model. A European model may use different #.

d-23,it should be the only diode in the area of the red and black wires

replace D23 with N1004. That is your polarity protection diode. Also you may want to replace D8.

Take note of what side the strip is on so when you put it back in, you put it in the right way.

Be careful not to plug the wires in the wrong way or you will blow those diodes again.

The SC-D23 is one of the Samsung camcorders affected by a recent class action suit. There is a manufacturing defect in the CCD.

Contact them via the number here to see about getting it replaced:
http://www.samsungclassaction.com/7.html

It,s the mounting the screws are touching something in the radio when bracketed and yes you probably blew the power diode in the radio, it can be fixed pretty easily. Try a fuse on the ground and the hot next time.

Symptoms shows that your JVC GR-D23 model camera has problem of defective CCD imager sensor and this part will be replaced.
JVC will repair your camera free of cost. Click JVC CCD Customer Notice for details
Thank you..

Hi,

D23 is the reverse protection diode and it shorting is the primary reason your fuse blew. As you posted, power was applied in reverse, hence other components would also fail. Pls check:
1. D22 - 9.1V Zener Diode
2. TR23 (2SC1096) 9 Volts regulator
3. D19 - 5.1 Zener Diode
4. IC4 (TA7222) - Audio Amp
5. TR14 (2SC2029B/10) - Finals
6. TR15 (2SC2028B/20) - Driver
7. Most capacitors over 220uF (like C123, C114 & C112)

Hope that this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Hello hubcap,

 

When the power was reversed this shorted out one of the components, possibly an Operational Amplifier. This tells me that there is no diode protection and possibly the circuitry is exposed directly to the input power supply. The fix would be to find the shorted component with the use of a schematic and a multimeter. Once you correct the shorted component then if possible you can add diode protection by putting a diode (forward biased direction) in the path of the positive line.

 

Again you will need a schematic, and a multimeter to work on this problem.

 

I hope this helps,

 

Thank you,

 

Shuttle83