Blaupunkt query - UK Vintage Radio Repair and Restoration Discussion Forum

Paul Mathew · 21st Jan 2020, 3:37 pm

I'm busy with a Blaupunkt radio chassis from a radiogram, and curious to know how to read the selector switch in the close -up pics: RDO; MON; STR; BAL? Bringing the set up to voltage, I don't receive any radio, but a signal injected into the volume pot produces sound from the speaker. So far, so good.

julie_m · 21st Jan 2020, 3:47 pm

The blue-outlined box next to the knob suggests: Radio, Gram (mono), Gram (stereo), Balance check.

Paul Mathew · 21st Jan 2020, 7:33 pm

Any idea what a balance check is?

'LIVEWIRE?' · 23rd Jan 2020, 12:03 pm

If the radio were stereo I'd say 'Balance Control', but then doesn't that sign read 'Balance' & 'Check', not 'Balance check'

music-centre · 23rd Jan 2020, 2:13 pm

There looks to be a control marked "balance" on the right where the numbered knob is, only part of the word left where the glass dial is broken which I guess controls balance when playing a record.
Cant imagine what a Balance check is though?

AC/HL · 23rd Jan 2020, 3:08 pm

Does it inject a tone to aid balance setting?

21st Jan 2020, 3:37 pm	#1
Paul Mathew Pentode Join Date: Jan 2014 Location: Cape Town, South Africa Posts: 214	Blaupunkt query I'm busy with a Blaupunkt radio chassis from a radiogram, and curious to know how to read the selector switch in the close -up pics: RDO; MON; STR; BAL? Bringing the set up to voltage, I don't receive any radio, but a signal injected into the volume pot produces sound from the speaker. So far, so good. Attached Thumbnails

21st Jan 2020, 3:47 pm	#2
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Blaupunkt query The blue-outlined box next to the knob suggests: Radio, Gram (mono), Gram (stereo), Balance check. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.

21st Jan 2020, 7:33 pm	#3
Paul Mathew Pentode Join Date: Jan 2014 Location: Cape Town, South Africa Posts: 214	Re: Blaupunkt query Any idea what a balance check is?

23rd Jan 2020, 12:03 pm	#4
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Blaupunkt query If the radio were stereo I'd say 'Balance Control', but then doesn't that sign read 'Balance' & 'Check', not 'Balance check'

23rd Jan 2020, 2:13 pm	#5
music-centre Heptode Join Date: Sep 2007 Location: Brentwood, Essex, UK. Posts: 687	Re: Blaupunkt query There looks to be a control marked "balance" on the right where the numbered knob is, only part of the word left where the glass dial is broken which I guess controls balance when playing a record. Cant imagine what a Balance check is though?

23rd Jan 2020, 3:08 pm	#6
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Blaupunkt query Does it inject a tone to aid balance setting?