Question about LG Home Theatre System HT302SD
Can I get this board, this power unit has several problems, diodes short cut(D951,D952), rectifier bridge(BD 901) short cut, IC902 short cut, zener diode 33V (ZD902)short cut
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Posted on Jan 02, 2017
Hi, as you've lost the original parts I suspect finding their numbers may be next to impossible but not to worry. There are several " STAGES " for some power supplys-one stage will drive the final amplifier circuits, while another drives the dvd portion and another for the fluorescent display. My advice is to use a part number from another stage of the power supply ( make sure the diode looks the same ) and if that feels wrong just order a diode that has at least a 100 volt rating for 3 amps and that should do the trick. I hope this was of some help, write back & let us know if we helped or can be of further assistance, Thanks for asking FixYa, and good luck-Prodzilla
Posted on Apr 14, 2011
You might try to follow the diode back to the source and read voltage to know the value of the diode and also look on the diode for generic number--short of that Google the model number with "parts" as it might be cheaper to replace the board than try to fix it by guessing values.
Posted on Aug 27, 2012
Below is a common diagram for LG Microwave "High Side" components.
The component below the Monitor Interlock Switch is the Transformer. So, on the High Side of the transformer, you can see all the components.
Can you give me the model number of the unit that you are wanting information?
Posted on Apr 10, 2015
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Circuit diagrams of SMPS section of many popular brand devices are given. Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Posted on Oct 16, 2015
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