Author Topic: Samsung DTB-H550F PSU require R28 value  (Read 1626 times)

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Offline telasgTopic starter

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Samsung DTB-H550F PSU require R28 value
« on: December 10, 2012, 08:39:27 am »
I'm carrying out some repairs to the Samsung DTB-H550F set top box power supply and resistor R28 is burnt beyond recognition.  Anyone happen to know the original value?
 

Offline peter.mitchell

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Re: Samsung DTB-H550F PSU require R28 value
« Reply #1 on: December 10, 2012, 09:33:52 am »
Nope, but where abouts is it in the circuit? It may be a fusible resistor and be a result of failure not a cause.
 

Offline telasgTopic starter

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Re: Samsung DTB-H550F PSU require R28 value
« Reply #2 on: December 10, 2012, 09:59:43 am »
I didn't think a fusible resistor would burn and would simple go open circuit like a fuse.
The resistor is 1/4W and measures around 66k.  It is on the low voltage output side of the transformer next to several Samxon bad caps (3 by visual inspection).
 


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