[gpv]

Beomaster 500 repair update, I replaced two burnt power amps and all LM317.
By measuring the voltage as the manual says on module 4 (microcomputer) instead of 5 volts it shows me 35 volts and by acting on R15 it does not decrease.
Advice?

[gpv]

I will use used components that I own on old boards so as not to spend much. I’ll keep you up-to-date.
Thank you

[gpv]

Thanks, I’ll look into it but either way I want to try and fix it. The problem is that the wiring diagram found on the net does not match.

[gpv]

No one helps me? Now I only see black screen and hear only audio

[gpv]

finally inspecting with the lens I solved, on the serigraphy of the upper board a capacitor was drawn upside down and a track was interrupted. Now everything works.
In the card inserted in the middle, the boxed one, I haven’t changed anything, should I? can it give me problems in the future?.
Thank you

[gpv]

Does anyone know the area where the card where to check for failure?

[gpv]

Help I finished replacing all the capacitors but nothing has changed, you continue to see the video posted above. I haven’t changed only those few non-polarized capacitors because I can’t find them, however they are still good.
Could it be a new fake capacitor?
Which ones can I check first?

[gpv]

vx5000 update.
Changed the capacitors to the power supply, to the capstan, to the upper board, in the lower one I found a capacitor missing the C513 and one reversed the C515.
Now it works but you see disturbed, I attach video.
Perhaps the capacitor C513 was not inserted intentionally and also the C515 must remain inverted?.
I didn’t change anything in the tab sandwiched between the one above and the one below.
Advice?

[gpv]

But where did you delete the components made jumpers?
Can you post the photos on the other side of the cards?
I would like to modify my vx7000

[gpv]

ok thanks I will replace them and then I will let you know. It will take a bit ‘of time

[gpv]

Phenomenal, very good genius.
I would also like to try with my vx5000 but do you have a diagram or the list of components for modification?

[gpv]

Vx 5000 repair update. They gave me another broken vx 5000. I also changed the critical capacitors to this one, this is where the head motor spins. With the plug inserted if I try to press the power button nothing happens, if I insert the cassette it is taken but it does not start but … if I unplug it and put it back and then press the play button then it starts but the audio is heard and you can’t see the video ?????.

[gpv]

Thanks I’ll start with these, I noticed that by inserting the headphones the mute relay activates and I hear a “hummm” noise.

[gpv]

I fixed the vx7000 with the same problems but the motor spun when I pressed the switch like in the previous video.
For the vx7000 everything went well only the tape counter doesn’t work you can only see two bright red dashes and not the 00.
Do you know where the sensor that performs this task is located?

[gpv]

Alright thank you very much

[gpv]

Thanks for the advice, I’ll replace it and hope it gets going again.

[gpv]

Up until yesterday it worked fine this way.
Today as soon as I turned it on I heard a popping sound and it smoked. Practically the integrated display MM5450N is burned, I do not understand why.
Can it be replaced? could it burn again?

[gpv]

Of course I agree but I made the video this way because when it’s all assembled it behaves the same way, I wanted to show that only the head unit doesn’t turn. I can make the video with a cassette but the problem is the same

[gpv]

Hi I replaced the condenser even if it was good.
The problem remains.
I enclose the addresses of two videos uploaded on youtube to show you the problem.
When I turn it on the left wheel spins for a few seconds then stops while the head doesn’t move. In the second video you can see my hand dragging the mechanics, then by pressing any button it is ejected

[gpv]

What else could it be? I don’t want to throw it in the landfill

[Author]

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