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Showing results for tags 'restoration'.
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Hello there, first of all sorry for my english. I heve sign in to this forum seeking help. 3 months ago my Sansui AU-888 right chanel has burned...most of transistors went down. I menaged to replace components with equals or similar replacements, still i stoped on bias mesurment/adjusting mA and mV. I hoped member "skippy124" with his large experiance could help me...sending instructions where to plug in multi-meter to mesure mA, i poses shematic but "plug + to 2 and - to B1" is just black magic for me. Things i have done so far: Inserted right quick acting fuses Replaced burned 1Kom resistor (same for left channel to keep them "same", as new resistors have +/-5% and old one have +/-10% tolerance) Changed all caps to Phanasonic for Audio, nichicon fine gold/fine grade, mkt, Elna for Audio, same capacity exept for main filter caps, few are bipolars as schematics sugest etc. Changed VR regulation pot's to new ones (i heared old's are preety bad) Switched voltage selector from 220 to 230 (right value in my "country", i know voltage varies +/-10% but i wanted to be on the safe side) As all right chanel transistors burned and infamous "flying sourcers" ware present i decided to change them all: 2SC281 -> 2N3904 ....(in service manual there is 2SC984 but mine had 2SC281) SC1111 -> C1402 2SC680 -> 2SC5171 2SA566 -> 2SA1930 CDC 8002 -> 2SC5171 CDC 9002 -> 2SA1930 Are transistors right choices? in the future, what to insert in place of XA-495G ? transistors whare choosen from bunch to mach hFe, are mounted on silicon thermopads and most with handcrafted "radiators" ("to be on the safe side") now i need specific photos and instructions other than from unclear (for me) manual where to plug multimeter to set proper mA (is it in place of pulled out fuse? F003/F004) mV mesurment is clear. also is "minimal counterclockwise" = "turn to the right as far as possible" ? If no one help me i will be forced to give this amp to some spec...problem is i spend most of my money reserves already =( Link to two photos, shematics, datasheet of transistors and service manual: http://www.mediafire...iokncl6stku6cou Regards and thanks in advance.
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- IntroductionsSansui
- AU-888
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Hello fellow SNAers, I've got a working Yamaha CA-1010 amplifier that I would like to have it recapped and brought up to spec to ensure that it will last me some 30+ years into the future without any major issues. Could you guys please give me some names of people who would be capable of performing this kind of service? I would prefer if this person was located in South Australia in order to avoid having to post this 20kg amp interestate. I know that there are some great members interestate that are used to do this kind of service on a regular base, however it would be fantastic if we could find this kind of professional here in Adelaide SA too. Please let me know your thoughts and thanks in advance!
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- restoration
- recapping
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Hi, I have a beautiful Braun SK55 that I picked up at a garage sale several years ago. The tonearm is damaged and someone has made a poor attempt at rewiring. Does anyone know where I could source a new tonearm or recommend someone to chat to about getting it fixed in the Melbourne area. Cheers...
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- restoration
- repairs
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I have aquired a Grace g-707 that has been trashed and I'm restoring it. The metal parts of the arm are in good condition, part of the anti-skating assembly was cracked, but repairable, but the headshell is completely missing. So what I want to do is 3D print a replacement headshell. Using images on the internet I can get a pretty good idea of the geometry, but for accuracy I need actual measurements. Is there a g-707 owner out there who can get a ruler, or better yet some calipers and give me the dimensions? Only need the headshell, not the arm. Here are the measurements I need (in rough order of priority): width length max depth (at the back) min depth (at the front) outside diameter of the arm mounting tube length of the arm mounting tube distance from front to start of screw holes length of screw holes width of screw holes spacing of screw holes (should be 1/2", yes?) thickness of the plastic lastly, if you can measure the angle between the arm and the headshell that would be great. You can refer to the image to see what I'm talking about. If you can't be bothered doing them all then just the length, width and depth would be a great help.