Untitled Page
ARCHIVED FORUM -- April 2007 to March 2012
READ ONLY FORUM
This is the first Archived Forum which was active between 17th April 2007 and
1st March February 2012
Search
-
Thanks. Great to know that I'm not just talking to myself here. Now back to that toasted resistor; If this resistor conducts a too high current, it will be because it sees a too low resistance to ground somewhere. Candidate components are : - The 10nF capacitor that goes to the anode feed of the tuned circuit (it's a nice green Philips type
-
Yes, it is getting more and more difficult to get the right lamps, I get more and more requests. Two types are used in these machines, the stereo and tuning lamps are not of the same wattage. I can supply both types. Martin
-
Thanks Peter. It's nice to know that there are people who actually read all of this. The birds nest build is a very simple and cheap way of constructing but not always easy to repair. It may at first glance seem easy to work with but: - Leads and connections can hide behind other things. - You will often have to take out one or two other components
-
- Lamp housing and lamp socket - that black triangle that holds the window in place + the socket for the lamp. Same parts are used for the Stereo-Lamp on the 1100 series. Two different types for the Stereo and Tuning lights. The one for the red Tuning lights has two lenses, Stereo has only one. - Balance-Slider. I guess this is the same as in the BM
-
But I still need to find out why that resistor got toasted. The schematics show the resistor (red circle) feeding a grid on the EF89 valve. Martin
-
The manual gives this resistor as a 22Kohm and with a little good will I may be able to spot part of the first red colored ring. A quick in-circuit check gave a reading of apprx 50 Kohm which proves that this resistor is in need of attention. The meter reading out of circuit provided more proof: and here it is together with its replacement. I chose
-
Right at the center of the chassis a small resistor looks a bit cooked. I would say beyond 'well done'. I cannot read its color coding anymore and I doubt it to be still OK. Another one nearby looks a little dark too. Martin
-
Rudy, I get a lot of emails and PM's but yes, I do remember you now. There are no hidden shortcuts in the Beomaster 1900. Remove the rear metal rail (4 screws). Undo the 2 screws under the top alu lid and lift it right off. The alu lid will come off together with the underlying plastic panel and the grill over the cooling fins as one piece. The
-
A similar type of capacitor is mounted from the metal shielding of the volume control potentiometer to chassis ground. This one already threw the towel a long time ago. With one end shot out it is asking for a replacement. Much better Martin
-
There are more things that need to be checked before applying power. The suppression capacitor is normally one of them but this set does not have a suppression capacitor but instead a kind of decoupling capacitor that sits across the rectifier. That is the blue capacitor to the left. This little sorry looking thing was placed right next to a couple