Question about Sharp CD-BA200 CD Shelf System
Will not reset from PROTECT MODE. Please provde reset protect mode
Check the speaker wires for shorts, if okay! the audio output ic's are loading the circuits causing the protect mode to engauge, only option replacement of the above mentioned parts.
Posted on Apr 22, 2012
If you are a technician desolder the Audio amplifier IC,and check if the stereo turn on but with no sound.If the stereo turn on the audio amplifier IC is in short circuit and need to be replaced.
Posted on Jun 05, 2009
SOURCE: protect mode
I own a Sharp DVD Micro System XL=DV60 that began to have a "protect" error message when I crank up the volume. Not sure if this applies to your system, but it could be worth a try. Before you proceed, the solution requires you to open up your system (Do not proceed if the unit is still under warranty :)).
IF you are not experienced in opening up electronic equipment, I suggest you find somebody who does. The error on my system was caused by the cooling fan being stuck or not able to spin. The system has a sensor or sense circuitry wherein, when it detects that the "amplifier" IC heats up, it spins up the fan to cool it down. IF the system detects that the fan is not spinning during the cooling phase, it will give out the "protect" message. Note that the fan only spins when you crank up the volume. Less or 0 volume will shut down the fan due to it's "energy star" feature. One possible reason why using headphones does not show the error, since headphones require less energy that the main speakers, thus the amplifier IC does not overheat. To solve the problem, I cleaned out the dust in the system via a 1 inch wide paint brush (haven't tried the compressed bottled air used to clean computers BUT it might do) and nudged the fan. Played the system w/o a cover and observed the fan operation and so far it has solved the issue. I plan to lubricate the fan shaft with very small amount(less than a drop) of machine oil using a syringe. If it does not work, I plan to see if I could purchase a replacement motor for the fan...
Again, I have not seen the internal layout of CD-BA2100 and not sure if there is a cooling fan. But then again, it's better than having the "protect" error popping up. :) hope this helps....
Posted on Nov 22, 2008
The protect mode indicates that a problem was detected in the final stage of amplification and the unit has shutdown to prevent further damage. These units use an AMP-pac part number: VHISTK40270N1 which is available at tritronicsinc.com for $53.09 plus shipping.
Posted on Nov 06, 2009
These units use AMP-PACs for the final amplification stages. This part is defective. The protect message indicates that there is an internal problem and the unit is shutdown to prevent further damage. The part numbers are listed below with the costs. These parts can be purchased from tritronicsinc.com. Use the guest account to access them.
Posted on Nov 17, 2009
The protect mode is an indication that a problem was detected in the final stage of the amplifier. In this particular unit, the final amp stage is within a large "amp-pac" IC attached to a heatsink. This will be marked STK402-xx. This particular IC has been changed to provide better performance and longevity to a different variant. The cost for this part is around $60. While I can not state for sure that this is the problem, this is the most common failure part for the symptoms you have described.
Hope this helps,
Posted on May 04, 2010
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