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Hints, Tips and Solutions (Do NOT post requests for help here) If you have any useful general hints and tips for vintage technology repair and restoration, please share them here. PLEASE DO NOT POST REQUESTS FOR HELP HERE!

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Old 1st Jan 2017, 5:52 pm   #1
john.north
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Join Date: Jan 2013
Location: Immingham, North East Lincolnshire, UK.
Posts: 174
Default Bush VTR 103

Hello all,
Just been having a look at this set for someone. It worked well on AM but the volume on VHF was very low and distorted. All the transistors are the originals but rather than blaming the AFs for whisker shorts I got out the circuit. I have seen a few threads where it is said that the VHF on these sets is always low!
The cure is as follows:- Replace C40 0.01 Hunts, C42 0.25 Hunts then adjust the top core in the can that contains L24/25/26. This normally sits about 4 turns down from the top. This on was adjusted about 9 turns from the top.
the reception is exceptional and as loud as AM.
John.
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Old 1st Jan 2017, 8:14 pm   #2
tim.norris
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Join Date: Feb 2012
Location: Blackburn, Lancashire, UK.
Posts: 282
Default Re: Bush VTR 103

John, are you working from the Trader sheet or the original Bush service data re c40 and c42 ?
regards, Tim
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Old 1st Jan 2017, 8:46 pm   #3
john.north
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Join Date: Jan 2013
Location: Immingham, North East Lincolnshire, UK.
Posts: 174
Default Re: Bush VTR 103

Hello Tim,
From the Trader sheet.
John.
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