UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Kolster-Brandes MR10

crackle · 10th Nov 2019, 7:42 am

Let's not forget that this could easily be just a poor connection in a valve base, for instance a broken fork in the valve base. Gently wiggle the valves V2 V3 and V4 whilst the radio is on and tuned to MW with the volume up.
It is normal under these circumstances to establish if the AM oscillator V2 is working.
This can be done using another transistor radio close to the MR10, and see if any interference can be heard in the transistor when you tune through the MW band on the MR10.

Mike

10th Nov 2019, 7:42 am	#136
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: Kolster-Brandes MR10 Let's not forget that this could easily be just a poor connection in a valve base, for instance a broken fork in the valve base. Gently wiggle the valves V2 V3 and V4 whilst the radio is on and tuned to MW with the volume up. It is normal under these circumstances to establish if the AM oscillator V2 is working. This can be done using another transistor radio close to the MR10, and see if any interference can be heard in the transistor when you tune through the MW band on the MR10. Mike