Fixing the "Self Checking" problem of Panasonic DMR-E55 DVD Video Recorder

I have Panasonic DMR-E55 DVD Video Recorder and suddenly it start to get reboot when the system performs “Self Checking”. Because of this reboot problem I may not be able to record DVDs and need to put some extra effort to eject the disks. Most of the times this reboot occurs in cyclic pattern and to break this cycle I need to be eject the DVD disk manually from the system.

While examine the system my primary attention moves on to the “Digital RAM card” of the system (Because it actively involves in to the DVD burning process). But after the 2 weeks of continues inspection I found that the problem is in the SMPS primary chip - STR G6535.

After replacing the STR G6535, system starts to work in an order.

Replacement of this chip is not a complex process but while doing that it is necessary to put some attention about the SMD components located nearby.

Comments

Unknown said…

I have a LG DVD+VCR player and have an issue of freezing the whole thing some time after the power up. it means, it freezes the display, remote and keys on board are not functioning. but the strange thing is, the although the player is freezed up, the DVD disk is continue to run. i have to pull the plug off from the wall socket to turn it off. after i pull the plug and then put back immediately will not the player turn on. and its not responding to any command from the remote and keys on board. and even display is not came up. BUT, after overnight leaving unplugged, it gets back to normal again. and the problem comes again after playing the DVD about 20 mins.

I first suspect the crystal oscillator of the main CPU and I exchanged it with a new one (12MHz). - No use. and then replaced the clock oscillator (32.768KHz) - No use. the problem exists the same. in the power supply part, STR Gxxxx (sorry, I can't remember the number at the moment) IC is used as the SMPS controller and I suspect that too. but the point is after the player is freezes up, the DVD is still running as normal, and both parts (DVD and VCR parts, the VCR part has the main CPU and DVD part is a separate one) share the same power supply. Can't think of where is the problem... any help??

July 5, 2010 at 1:50 AM

Unknown said…

just now remember, my SMPS chip was STR G6351

July 5, 2010 at 1:54 AM

Dilshan Jayakody said…

According to the given symptoms this is not a PSU related issue. Check main controller chip and related areas.

It is better if you give the model number of your player.

July 14, 2010 at 9:48 PM

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