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cogil
Joined: 26 Apr 2008 Posts: 45 Location: Kenya
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Posted: Mon Mar 16, 2009 9:22 am Post subject: Primma Tv 20" no model number, uses strs6707 pwr supply |
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Primma Tv 20" no model shows.
Has an STR S6707 on pwr supply and cannot switch on has continuous buzzing sound when switched on, any manuals or help
Last edited by cogil on Mon Mar 16, 2009 12:26 pm; edited 1 time in total |
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jts1957
Joined: 24 Nov 2008 Posts: 2476 Location: Far, Far Away
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Posted: Mon Mar 16, 2009 12:17 pm Post subject: |
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Do secondaries of Switched Mode Power Supply have necessary voltages?
If all = NO ... problem in SMPS (?regulator?).
If one (or more) missing (or low) ... check for short on that (those) supplies. (?Horizontal Output device?) |
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cogil
Joined: 26 Apr 2008 Posts: 45 Location: Kenya
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Posted: Mon Mar 16, 2009 12:39 pm Post subject: |
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jts1957 wrote: | Do secondaries of Switched Mode Power Supply have necessary voltages?
If all = NO ... problem in SMPS (?regulator?).
If one (or more) missing (or low) ... check for short on that (those) supplies. (?Horizontal Output device?) |
Thanks for your answer @jts1957,
Have changed the switching regulator strs6707, but still wont power up the secondary, has a no/no power.
Will try and analyze side components which am assuming values could have been changed earlier. |
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