Majestic 4019 U Stereo

Grundig (Radio-Vertrieb, RVF, Radiowerke); Fürth/Bayern

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1959/1960
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 90975
    • alternative name: Grundig Portugal || Grundig USA / Lextronix

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 Specifiche tecniche

  • Numero di tubi
  • 8
  • Numero di transistor
  • Principio generale
  • Supereterodina (in generale); ZF/IF 460/10700 kHz
  • N. di circuiti accordati
  • 6 Circuiti Mod. Amp. (AM)     10 Circuiti Mod. Freq. (FM)
  • Gamme d'onda
  • Onde medie (OM), lunghe (OL), corte (OC) e MF (FM).
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 110-120; 220 Volt
  • Altoparlante
  • 3 altoparlanti
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: Majestic 4019 U Stereo - Grundig Radio-Vertrieb, RVF,
  • Forma
  • Soprammobile con pulsantiera/tastiera.
  • Dimensioni (LxAxP)
  • 610 x 350 x 250 mm / 24 x 13.8 x 9.8 inch
  • Letteratura / Schemi (1)
  • -- Original-techn. papers.
  • Autore
  • Modello inviato da Ernst Erb. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Collezioni

Il modello Majestic fa parte delle collezioni dei seguenti membri.

 Forum

Discussioni nel forum su questo modello: Grundig Radio-: Majestic 4019 U Stereo

Argomenti: 3 | Articoli: 11

I have a 4019U that plays very well, but the stereo balance control does not work. After checking all the switch contacts, tubes, capacitors, most of the resistors .Not being familiar with this model, I need some help getting this radio to work properlly.Would someone please help me?   Thank you Ross W. Hoff 

Ross Hoff, 08.Feb.19

Weitere Posts (3) zu diesem Thema.

 

There are quite a few errors in the Sam's photofacts. I used the non export model schematic from Radiomuseum.org for proper values and FM discriminator alignment.  
 
  • C58 and C59 values swapped on the Sam's.
  • T4 secondary wire colors swapped. Green is ground and puts speaker SP3 electrically out of phase with SP1. The input to V8 is 180 degrees out of phase with V7.
  • Page 7, A4 and A14 swapped.
  • Page 7, V1 is not ECC83 (12ax7) but is an ECC85 (6AQ8).  
  • Page 6 step 6, there is no A15 FM IF adjustment.  
  • Page 6 step 7, A17 will not to to Zero. Refer to 4019 domestic unit procedure www Radiomuseum.org to confirm that A17 is to be adjusted to Minimum voltage. 
  • Various capacitors are miss labeled and not identified on page 2.

Happy Restorations,

Paul.

Paul E. Pinyot † 2013, 08.Mar.11

Weitere Posts (7) zu diesem Thema.

When I first played this radio after the chassis restoration, there was a horrible bass rattle in the oval speaker.  When I pulled it for inspection I found all the foam gasket had deteriorated along with the voice coil dust cover. 

 
I removed the remaining foam and gently blew out the voice coil.  Then connected the speaker to an audio generator to vibrate any foam residue from the air gap for about 30 minutes.  I found about 74 hz to resonate the cone vigorously.
 
 
The foam rubber gasket and voice coil dust cover has rotted and turned to dust.  It can be replaced easily.  Tea Bag paper is strong and porous.  Cut a circle the size of a Nickel ($0.05), run a small bead of glue around the voice coil and set the paper in place.
 
     
 
 
The oval surround gasket that seals the speaker frame to the baffle board is replaceable with self adhesive Window insulation.  It is just the correct width and depth to make a good seal with out interfering with the cone suspension folds.
 
 
 
 
   
 
 
This is an easy fix to a horrible sounding problem.  I wish you good luck and good restorations.
Paul.
 

 

Paul E. Pinyot † 2013, 03.Mar.11

Weitere Posts (1) zu diesem Thema.