Question about LG HT502SH HT502SH HTK Theater System
Protection is usually the amplifier section of the unit, disconnect your speakers and switch on to confirm you don't have a burnt speaker of xover.
If it is the power amp they are very difficult to repair as the smt audio ics are put on by machine at very high temp.
if you remove the heatsink and it is the sub channel which is common, remove it with a pencil burner..you will be minus the sub but better than binning it.
Posted on Nov 20, 2017
I had exactly the same problem.
I run a repair center in cape town and one was given to me as LG wanted some ridiculous price to swop complete pcb's...long story short, mine was the 4 pin high current 12 volt regulator on the power supply pcb, it was at 5.3-6.3v. the number is KIA78P
R12P. SIMPLE FIX.
I AM LOOKING FOR A LOADER FOR THE HT-502 AS MYNE WONT READ DVD, TRIED SETTING THE LASER PUT NO GO, LG WANT R750, IT COST R250 A FEW YEARS BACK, ANY INPUT FOR A SUPPLIER AT AN AFFORDABLE PRICE WILL BE WELCOME.
Posted on Feb 11, 2015
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Posted on Jan 02, 2017
Sir avservice, I have also posted a problem about an HT502 DVD receiver + Home Theater. The sound won't come out of the speakers but only of the Plasma tv. But was working before. And the word "PROTECTION" is appearing on the display screen of the dvd receiver. But good quality picture on the plasma tv. Please help
Posted on Jan 25, 2010
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