Posts by baek47
38 total posts28 results
Beocord 9000 - keypad not responding
in BeoCord · May 29, 2025 09:18Hi Martin Yes, it is good and the IC1-3 are getting 4,8 v. I also checked that I have continuity on the display board when activating buttons on the keypad. Since my my last post I changed all transistors (and caps) on t…
Beocord 9000 - keypad not responding
in BeoCord · May 15, 2025 11:56I tested the P21 wire 3 with an oscilloscope. There is 5.5 v ac according to the servicemanual. Good - but the problem is still there.... Changed some transistors...no change. Checked thoroghly the keypad is working. Cha…
Beocord 9000 - keypad not responding
in BeoCord · May 1, 2025 10:03I also recapped all brown/orange ROE capacitors. I replaced the 4.7v zener before the P21 wire 3.
Beocord 9000 - keypad not responding
in BeoCord · May 1, 2025 10:03I also recapped all brown/orange ROE capacitors. I replace the 4.7v zener before the P21 wire 3.
Beocord 9000 - keypad not responding
in BeoCord · May 1, 2025 09:30I bought a Beocord 9000 and did various repair - but it is not responding at all activating buttons on the keypad panel. I powers up and I and there is light in the dispay + cassette drawer. All belts are changed and cap…
Beogram st/l tonearm disassembly
in BeoGram · Aug 3, 2022 03:41Hi, anybody knows how to remove the top screw/bolt on the tonearm of a beogram 1000. Its very tight…..is it glued? br torben
Beogram 6000 cd4 modulator
in BeoGram · Feb 5, 2022 08:24Hi I am replacing caps on the modulator board. But I am a little unsure on some caps... I have a diagram of the board in the servicemanual, but it does not match mine exactly. I know for other parts there 2 diagram for u…
Beomaster 1200 - thumb when input set L
in General Discussion & Questions · May 12, 2021 10:57Schematic preampsection
Beomaster 1200 - thumb when input set L
in General Discussion & Questions · May 12, 2021 10:57Hi The thumb switching to phono input in LO position is yet too loud.....one day, when I or someone forget to turn volume down to min., it will blow my speakers. Switching other inputs is good, a nice little thumb is hea…
CD5500 heat issue
in General Discussion & Questions · Apr 26, 2021 07:15Thanks Kim and Martin Yes, I did change input mains to 240V. I helped a bit but still the above temperatures. Thanks for the good advice - always important to do this :- ) Also - I can hold my fingers on the heatzink, wh…
CD5500 heat issue
in General Discussion & Questions · Apr 25, 2021 18:26Hi I have a cd5500, everything is functioning, but the back left corner on the chassis gets pretty hot. Inside is a "heatzink" with 2 pcs. 7805 voltage regs and a bd534 transistor. The surface temperature on heatzink mea…
Beomaster 1200 - thumb when input set L
in General Discussion & Questions · Feb 17, 2021 18:55Thanks Martin (again) I will accept the tbumb :- ) just strange when it is only in L position.... Idle current is good 7,5 mV.…tge trafo dont go escpecially hot. I think its mecanical - the bottom plate have been "twiste…
Beomaster 1200 - thumb when input set L
in General Discussion & Questions · Feb 16, 2021 13:44I have been renovating my Beomaster 1200. Everything is actually good besides... 1. When record input is set to L (riaa) I have hum and a unpleasant big "thumb" changing input - any input! Turning down volume to zero can…
Beomaster 1200 - dc on output
in General Discussion & Questions · Nov 8, 2020 19:48Hi Martin, I followed your advice of checking the output transistor, they were all good - nice rca's. I changed all capacitors in the power supply and oytput stage, also emitter resistors....all adjustment on the 33V vol…
Beomaster 3400 - hiss/dc
in General Discussion & Questions · Oct 11, 2020 12:33Hi Trying to set up quadrophoni, I am using a BM3400. I tried by some old ones, but I didnt make with those…. Now I bought a more stable one…..everything is actually good and it plays...but there are hiss on rear right a…
Beomaster 1200 - dc on output
in General Discussion & Questions · Oct 11, 2020 10:39Hi I bought a white BM1200 which is so good looking. I bought it as "functioning" but i had 13V dc on the output. I never attached speakers. I changed the 3000 uf output caps - , that didnt to it - now the dc is 18V meas…
generel motor questions - speed and heat
in BeoGram · Oct 11, 2020 10:31Hi again I tried infuse the bearings. They were in acetone for 2 nights, then dried 1 night, then in vacuum for days and only bubles the first night…..The BG1000 run run stable on correct speed, but the round motor it se…
generel motor questions - speed and heat
in BeoGram · Oct 11, 2020 10:31Hi again I tried infuse the bearings. They were in acetone for 2 nights, then dried 1 night, then in vacuum for days and only bubles the first night…..The BG1000 run run stable on correct speed, but the round motor it se…
Beomaster 3400 type 2802 diagnosis and repair
in Imported Content (Unmapped) · Sept 16, 2020 20:19Hi I am further, and my beomaster 3400 is playing. I had to change all pots because of noise and corrosion. But i cant find a replacement for the volumepot, which have 8 pins - i can only find standard 6 pins pots. The p…