Projet : Restauration F8X82A

Ha Bert,
Dank voor de oplettendheid.
Haal ze altijd door elkaar met de eindcijfers.
Nog net binnen de correctietijd aangepast.

Max,
Kleine correctie.
F9X38A.

In 2006 I acquired mine from a Dutch collector. It was several times restored since.
For some years it filled our living room with nice sounds and views.
Since almost 6 years now it is in use at my brother-in-law. I changed it voor the 1967 F9X38A.

See and hear this examplar on Youtube on the NVHR exhibition at Driebergen.


2007


2019

Looks really nice! Keep up the good work.

I also started the middle piece :







I checked all,

Mesurées Théorie
R 100 1,032 Mohms 1 MOhms
R 101 674 Ohms 680 Ohms
R 102 5,09 kOhms 5,1 kOhms
R 103 34,6 kOhms 33 kOhms
R 104 0,997 Mohms 1 Mohms
R 105 /// 120 kOhms
R 106 /// 620 kOhms
R 107 1,054 Mohms 1 Mohms
R 108 1,276 Mohms 1 Mohms
R 109 1,044 kOhms 1 kOhms
R 110 1,064 kOhms 1 kOhms
R 111 144 Ohms 150 Ohms
R 112 132 kOhms 100 kOhms
R 113 1,064 kOhms 1 MOhms
R 114 700 Ohms 680 Ohms
R 115 5,17 kOhms 5,1 kOhms
R 116 35,7 kOhms 33 kOhms
R 117 1,041 Mohms 1 MOhms
R 118 /// 120 kOhms
R 119 /// 620 kOhms
R 120 1,025 Mohms 1 MOhms
R 121 ?? 1 MOhms
R 122 1,055 kOhms 1 kOhms
R 123 1,039 kOhms 1 kOhms
R 124 142 Ohms 150 Ohms
R 125 144 kOhms 100 kOhms
R 126 999 Ohms 1 kOhms
R 127 984 Ohms 1 kOhms
R 128 10,10 kOhms 10 kOhms
R 128a 9,90 kOhms 10 kOhms
R 129 271 kOhms 220 kOhms
R 130 96,4 kOhms 100 kOhms
R 131 97,4 kOhms 100 kOhms
R 132 271 kOhms 220 kOhms
R 133 102 kOhms 100 kOhms
R 134 108,4 kOhms 100 kOhms
R 135 0 10 kOhms
R 136 Doen't exist !! 10 kOhms

Green, I already changed
Orange, I have to check
Red, I have to change




R108 >> 1,002 MOhms/1
R112 >> 99,1 kOhms/100
R121 >> 1,002 MOhms/1
R125 >> 100 kOhms/100
R129 >> 219 kOhms/220
R132 >> 219 kOhms/220

I also changed all the capacitors. They were mainly good, but I personnaly don't trust capacitors after a time life of 30years (here we are on 61-62 years ...)

C206/207 (8µF + 8µF / 300V) : 7,27 µF - 7,45 µF >> 8µF + 8µF / 450V
C217/218 (8µF + 8µF / 300V) : 6,31 µF - 6,1 µF >> 8µF + 8µF / 450V

Here I am


Next step : change the Red R + Red C (50µF + 50µF + 50µF >> 47µF + 47µF + 47µF / 450V), check Orange R and re-put the purple one (in fact we can see a arm of this one ... I don't know how it disappeared ...)

Today I received some capacitors and so on that I ordered 2 days ago.

So, let's start the restauration \O/

First the tiny part :




How it looks first >>


I checked all the elements

- Measured - Theory
R300 100,3 Ohms 100 kOhms
R301 104,7 kOhms 100 kOhms
R302 69,8 kOhms 68 kOhms
R303 9,63 kOhms 10 kOhms
R304 341 kOhms 330 kOhms
R305 341 kOhms 330 kOhms
R306 488 kOhms 470 kOhms
R307 523 kOhms 470 kOhms
R308 2,27 MOhms 2,2 Mohms
R309 2,14 MOhms 2,2 MOhms
R310 2,28 kOhms 2,2 kOhms
R311 2,28 kOhms 2,2 kOhms
R312 bornes condo 1,5 Mohms
R313 bornes condo 1,5 MOhms
R314 235 kOhms 220 kOhms
R315 242 kOhms 220 kOhms
R316 51,8 kOhms 47 kOhms
R317 1,535 Mohms 1,5 MOhms
R318 1,571 MOhms 1,5 MOhms
R319 339 kOhms 330 kOhms
R320 278 kOhms 330 kOhms
R325 9,72 kOhms 10 kOhms
R325a 10,46 kOhms 10 kOhms
R326 14,16 kOhms 10 kOhms

C310 9,27 µF 8 µF - 350V
C306 9,28 µF 8 µF - 350V
C307 10,18 µF 8 µF

I changed :
R326 >> 9,88 kOhms (new one)
C310/306 >> 8µF - 450V
C307 >> 10µF /-450V

My multimeter can't do the measurement of capacitors more than 20 µF, so I also changed C300 and C301

How it looks now


Well, if you want to do it nicely, you have to be an artist, mounting stuff in the air is not easy at all ...

Next step on this part : change R320 and put tie around the big capacitor