Re: Sylvania LC420SS8 Buzzing When In Standby
Mr Bill
Just wanted to say thanks, the diodes came in the mail today (I decided just to order the right replacement rather than chance it) and I replaced the pair and the set came right up. I instantly heard the buzzing (very obnoxious) and clipped the D655 and it stopped. Thanks for posting that service bulletin.
rass96
New Member
Last Activity: 05-24-2014, 08:58 PM
Joined: 07-20-2012
Location: Brandon/suffolk
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Re: Sylvania LC420SS8 Buzzing When In Standby
Ok I found a shorted diode, its the one on the right next to the tall cap in the bottom square. They are parallel so they both shot bad till I desoldered one to isolate. Its an SB 390 which is a 3A forward continuous current, 90V peak reverse voltage. I have a SB 360 on hand which is 3A 60V reverse. Do you think it would be close enough? Or do you think the difference is too much?...Leave a comment:
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Re: Sylvania LC420SS8 Buzzing When In Standby
Thanks, I will look at those more closely. When I was randomly testing diodes today I noticed like 4 of those had continuity but I think they had common connections. I will let you know how it goes.Leave a comment:
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Re: Sylvania LC420SS8 Buzzing When In Standby
Yes its the same board, its a US spec TV ( I am USAF stationed here). No I mean for the original power problem. You said it was a shorted Schotkky diode? Just trying to narrow the search. But it did have the buzzing too, so that will get removed thanks to you.Leave a comment:
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Re: Sylvania LC420SS8 Buzzing When In Standby
Mr Bill which Diode was your original problem? I have one doing the same thing.Leave a comment:
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