So I have a rather nice set of tubes, but unfortunately the tube housings are in bad shape, glycol started to eat it away.
Normally one would change the housing and get done with it, but I'm not feel like up to the task removing the tubes from the housing without damage.
I started to clean the housing, where the pitting started I used a dremel drill to clean the surface from the grey stuff what was left there, then I applied some enamel paint to cover the aluminum that is exposed to the coolant.
What is experimental about this is that I applied some paint even on the tubeface so only a 16:9 area is visible out of the tube, what I hope can further improve contrast.
Stridsvognen did something similar to a 8500 and he was pleased with the result (as much as one can be pleased with an AC machine)
The first layer of paint didn't go flawlessly, likely I have to make a second run...
There is a big empty spot in my garage ceiling where a 1208/S2 used to hang. Nice hobby. And good to see that some people still have the love for the "sunshine in bottles" machines I have spend lots of hours tweaking and adjusting to get the best picture out of it. I got a bit of a frankenstein machine. It was 8 inch tubes, but with LC setup from a 9 inch machine. I do not remember that i had any leakage of glycol at all. Is that starting now since the machines are getting older?
I got rid of it because I had to rebuild the room and didn't know where to go with it and someone offered me a reasonable price for it. Man I remember the weight of that thing...ooof If I would get my hand on a 909 for a good price I would consider hanging one again. Because the black was amazing and the colors were nice. And a real nice "going to the movies" feel. But I have to admit, to just watch a game or show with friends the new digital epson does the job well. Because we don't need that dark of a room anymore.
Post by stridsvognen on Apr 25, 2020 15:51:14 GMT -5
I panted the glass like that on the old 9500 test machine, changed glycol in one of the tubes ,and the epoxy pealed right off the glass, so i think it would be better to cut a piece of pvc to frame the 16:9 on the tube face. Hard to say if it changes anything.
wildone: I don't think the B chip is at fault. The lead-free manufacturing process and solder balls used are more likely the culprit as the BGA still works after reballing
Feb 26, 2021 8:06:43 GMT -5
trloki: Hi Todd, Same problem Onkyo TX-NR646, any help on how to fix it plz?
Feb 25, 2021 1:35:18 GMT -5
btrial: poppabradj I have the same problem with Pioneer VSX-1131, after uprating firmware through NET. Now I cannot access neither NET nor Bluetooth, and also updating through USB doesn't work giving 0-81 error. If you have found any fix let me know.
Feb 7, 2021 15:37:42 GMT -5
poppabradj: Hello Everyone, I have a Onkyo TX-NR656 Can model and it's giving me error 0-81 when I try to update from a USB... I think i have corrupt firmware, becasue I had no access to NET, Bluetooth feature. The On screen display never Error 0-81 now.. please Help
Jan 7, 2021 21:33:29 GMT -5
gjaky: Hi Craig, Why do you need it? I mean with multi channel amplifiers all channels are the same, it is usualy possible to find at least one working channel so you can identify (or at least guess) component values for repair
Nov 16, 2020 2:53:07 GMT -5
craigr: Actually, I have been unable to find schematics or a service manual for the Lexicon LX-7 or LX-5 amps. Of anyone has a copy I would highly apreciate it.
Oct 31, 2020 15:28:59 GMT -5
analogrocks: Those are pretty pictures! Set one up running a ps1 or NES and sell them as retro gaming projectors. OR post them to me. Just put the stamps in the corner. Should make it just fine
Aug 28, 2020 16:28:01 GMT -5
iwwy1969: Hi all. Nice forum. I have Onkyo TX-NR616 no sound and no usb access. I have 5v at usb. I found that oscillator close to DSP is not working. It has no voltage feed from DSP. During the testing through display DSP shows version D??? .
Jul 13, 2020 8:25:33 GMT -5
lfcfan: Hi Todd, have been reading endlessly about the topic, and I really don't think that I'll be capable to 1. do the job myself as I don't have enough of the right equipment, and it looks like only the people who have access to TI exclusive distribution networ
Apr 9, 2020 17:17:06 GMT -5
skydronelink: Thank you I advance
Jan 29, 2020 4:01:41 GMT -5
skydronelink: Hi Repairaj, I have the same issue, but I am not able to get the cap value, I can tell it is the same board but deffirent rev cause of the side CAP is not the same value ! any idea how I can get the right burnt cap value?
Jan 29, 2020 4:01:31 GMT -5
skydronelink: Hello Jerme, thank you for the those images, is there is any chance to get the C2 (Cap) value or an image for it ? Thank you in advance.
Jan 27, 2020 23:15:06 GMT -5
skydronelink: Hello Sergio, I have the same issue, but I am not able to get the cap value, did find out what is the cap value?
Jan 26, 2020 18:01:17 GMT -5