Question about Cyberhome CH-DVD 300 DVD Player

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Power on problem

I have had this unit for almost 2 years. It would not power up. I checked my 12V and 5V supply. It's there. still wouldn't power on. Have no diagram to further troubleshood. Any idea.

Andy

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  • Anonymous Jun 14, 2008

    My unit has the same basic problem. I have no red or green light indicater light. the fuse is good and the D1,D2,D3,D4 and D5 diodes appear to be good. I bleive the D6 diode has high reverse leakage. But, I do not have a schematic to do any further checkilng. Sam

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Http://www.drx9000repair.netfirms.com/#Cyberhome%20CH%20300

Posted on Jun 06, 2008

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1 Answer

LG VCR power up problem


check smps volt +12v, -12v, 5v,3.3v, -22v.mast be have +12v, -12v, 5v.if not change or" connect extranal smps.

May 30, 2012 | LG Televison & Video

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Cyberhome CH-DVD300 DVD Player


Symptom: Unit will not power up at all. Power indicator doesn't work.
or after inserting disk, screen says "loading disk" but then
says "bad disk".
Solution: This problem is usually caused by a bad 5Volt power supply.
Check the 5V output of the power supply board. The output
plug is clearly marked. If this 5V is less than 4V, the unit will
not operate. This is caused by defective filter capacitors in the
5V supply. These caps are easily identified. Replace these
two with the same values and the 5V should return to normal.
Note: Because of the confined spaces on the board, only use caps
that are of the same physical size. Capacitors are made in a
varity of hights and diameters with the same electrical
specifications. Do not try to pigtail a larger cap in circuit. The
circuit will not work correctly. I can supply these if you can not
find them locally.

on Mar 28, 2010 | Cyberhome CH-DVD 300 DVD Player

1 Answer

Power supply diagram DMR-E50


If the power supply is part of the main board, then a tech needs to troubleshoot with a schematic to the component level. That is expensive. Replacing the main board is expensive. Here is the part number for the main board from Panasonics web site. Nice price!

REP3497B MAIN PCB 303.72 *

Having worked on instrumentation grade switching power supplies, I can tell which parts are the main culprits. Electrolytic capacitors ( those are the tall ones that have a polarity marking on them, diodes ( strangely enough it is often a protection diode that shorts ), regulators, and switching transistors. If it is a capacitor they will sometimes but not always leak. The fan not running usually means you have no 12VDC.

That said, I wouldn't stick my hand in there if I didn't know what the design is like. Some I have seen step the 120VAC line voltage up to +/-160V DC before dropping it down to +5V, -12V, etc.

The sad part is that these parts are usually pretty inexpensive and many are available at Radio Shack. The cost is the labor to figure it out what went wrong.

Jan 19, 2012 | Panasonic DMR-E50 DVD Recorder

1 Answer

Ive had this bluray player for 2 years and it was working fine, then one day i tried to turn it on and nothing happened. i checked if the fuse was blown but i appears to be fine. so there is no power...


hi,
there is possibility of two complaints.
1, The SMPS power supply fault
2. the mother board fault.
if the SMPS is faulty the you can rectify the problem. If it is with the mother board the you have to contact the manufacturer .
First of all you have to check the SMPS ( switch mode power supply). you have to check the voltages at it secondary stage. 5v, 12v, etc
switched-mode power supply (switching-mode power supply, SMPS, or simply switcher) is an electronic power supply that incorporates a switching regulator in order to be highly efficient in the conversion of electrical power. Like other types of power supplies, an SMPS transfers power from a source like the electrical power grid to a load (e.g., a personal computer) while converting voltage and current characteristics. An SMPS is usually employed to efficiently provide a regulated output voltage, typically at a level different from the input voltage
for checkin the SMPS voltaes you need a multimeter. And check the voltages at it secondary stage
Added the inside view of BD 1600
ajin_g_45.gif

if there is no outputs from the smps then you have to replace the SMPS drive STR ic near the big capacitor. Also ty to replace the OPTO coupler ic. y have to check the all resistors near the ic.

Remember one important thing that the capacitor can hold charge for some time even if you disconnect the power. so after removing the power. remove the SMPS very carefully. discharged the capacitor using a bulb.
i have also added a video for SMPS working for you reference will hep you for repairing your one

ok

Apr 07, 2011 | Samsung BD-P1600 Blu-ray Disc Player

1 Answer

Unable to eject yellow light is on


The Power Supply is having problems, . Most likely the 2200mf capacitor close to the 5v,12v output... Easy to replace, just get a spare from radio shack for about 2 bucks.

Nov 28, 2010 | Cyberhome CH-DVD 300 DVD Player

2 Answers

Won't power on


Toss this junk to the garbage can, this is how I solved my frustrations with my two units

Dec 29, 2009 | Cyberhome CH-DVD 300 DVD Player

1 Answer

Loading problem


kinda heath robinson affair this one.
If you buy a usb to IDE adapter, they come with a 5v & 12v power supply.You need to open the unit and connect this to the dvd drive's power.
You'll know it's working if you hear hard drive activity.
The recorder will power down, then just power on and away you go !!
alternativly (not tested) get a ide power cable splitter, but the current might be too much

Jul 11, 2008 | JVC DRMH20 DVD Recorder

4 Answers

Cyberhome CH-DVD 300 DVD - YELLOW light indicator of what problem?


Marlin P Jones & Assoc. Inc.. has a 5V 2.2A /12V 1.5A cord power supply that will fit into the space where the original power supply was! Lists for $6.95 but online price was $2.95. Works great! Connect 12V supply to the yellow lead and the 5V to the red lead of the output connector, black is ground, common to both supplies. Use QC terminals to the power cord input terminals, remove the cable clamp and the power supply will nestle beautifully in the space without need for support. (Remove the old circuit board plastic (3) and rear brass standoffs and use the front brass standoff for the output cable shield ground connection. (Part No. is 15955-PS) I bought two because I have a 2nd Cyberhome CD-DVD 300 which hasn't crapped out yet.

May 15, 2008 | Cyberhome CH-DVD 300 DVD Player

2 Answers

Sansui dvd recorder SAN0901


turn the power on. to get rid of the red light you need to press the timer/rec button on the remote until it turns off. the red light means it is programed to record.

Dec 01, 2007 | Sansui VRDVD4005 DVD Player/VCR

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