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 Post subject: st3500630as PCB board testing help
PostPosted: February 11th, 2014, 8:35 
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Joined: October 9th, 2011, 19:27
Posts: 74
Location: United KingdoM
Hi

I have a st3500630as PCB board that was working and the drive was to with a faulty 3r3 inductor but when I got this replaced by a trusty repair guy in a TV repair shop it powered on with beeps but then the inductor had come off for what ever reason

I would like to know is there any test that I can do until I receive a replacement inductor to make sure that the PCB is working so I do not waste time in soldering a new inductor

I will really appreciate any help

Thanks


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 Post subject: Re: st3500630as PCB board testing help
PostPosted: February 11th, 2014, 8:53 
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Joined: October 9th, 2011, 19:27
Posts: 74
Location: United KingdoM
is there no testing that can be done
I am an engineer and very competent with a multimeter

A replacement PCB is out of the question


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 Post subject: Re: st3500630as PCB board testing help
PostPosted: February 11th, 2014, 15:28 
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Joined: December 5th, 2011, 5:38
Posts: 1740
Location: Verona, Italy
Spildit wrote:
Buy a new pcb and pray for the pre-amp to be ok.

P.s. - Prayers are for free.


i totally agree

P.S.
i'm an electronic technician, i'm very competent with a multimeter too

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My firmware database:
https://mega.nz/folder/O01DkBRI


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 Post subject: Re: st3500630as PCB board testing help
PostPosted: February 11th, 2014, 16:16 
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Joined: October 9th, 2011, 19:27
Posts: 74
Location: United KingdoM
there must be test points on the pcb


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 Post subject: Re: st3500630as PCB board testing help
PostPosted: February 11th, 2014, 16:57 
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Joined: December 5th, 2011, 5:38
Posts: 1740
Location: Verona, Italy
If you know test points to compare you can guess where the problem might be, but you already have a known problem (the inductor) so you need first to find a replacement for it then you can check voltages points.
However you need to know which are those test points, the best guy in the forum for test points is 'fzabkar'

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My firmware database:
https://mega.nz/folder/O01DkBRI


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