Author Topic: farnell LS30-10 electric scheme, mising parts  (Read 1530 times)

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Offline poikkaTopic starter

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farnell LS30-10 electric scheme, mising parts
« on: April 09, 2017, 07:29:34 am »
Hello

I get farnell LS0-10
It dosen“t work at all, because ita seems there is missing some parts :-X. (See photo attached)

List of missing parts:

C1, C5, C12, C46, C41, C50  T1, SW5, R11, R69, R70

Can someone give me advice, there I can find electric scheme of this device? Or if smbd have the same one, can you provide me some photos/info about missing parts?

Thank you
 

Offline mikeselectricstuff

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Re: farnell LS30-10 electric scheme, mising parts
« Reply #1 on: April 09, 2017, 09:03:31 am »
There are photos here
https://www.eevblog.com/forum/testgear/farnell-ls30-10/msg787850/#msg787850

google "LS30-10 Schematic" finds a few hits - I have the full manual but schematic is 1 page A4 so not very clear
 
From the parts list
C1 47n 250V
C5 1u 25V
C41 470u 40V
Can;t see C46 in list
C12 ,R11 , C50,R69,R70 not fitted
SW5 is voltage select - suggest you just hardwire this.230V is towards front panel
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Offline TheUnnamedNewbie

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Re: farnell LS30-10 electric scheme, mising parts
« Reply #2 on: April 09, 2017, 09:16:37 am »
Judging by the fact that those holes seem to be clean, I'm gonna guess they were never meant to be fitted, or for some other versions, like Mike says.

if you can't find any schematics, best way to approach this would be to just look at how the device seems to be built and measuring some sensible points for voltages, as a start (ie, verify that voltage regulators are outputing the right voltages, check the voltages accros capacitors).
Of course, always do a visual check, and see if there are no black/other odd color marks on the pcb and/or components.
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