- Sony Blu-Ray Player issue FIXED!!! - 2 Updates
- Using a Variac for starting an old tube set - 2 Updates
- Is there any way to adjust this? - 1 Update
- Where can I get a FREE schematic for a Hallicrafters SX-99? - 1 Update
ohger1s@gmail.com: Feb 11 06:07AM -0800 On Saturday, February 11, 2017 at 12:51:10 AM UTC-5, Phoena Greene wrote: I put the Sony in the sink and plugged it in and > hammer. About ten smashes and it looked like a Hyundai totaled in a drunk > driving accident. > Rest in pieces, Sony blu Ray Player. Around here, you can't have AC anywhere near water without a ground fault so you would need an extension cord. OTOH, if it fits, remove the top cover and place the offending equipment in the microwave oven if you want a real visual treat.... |
thekmanrocks@gmail.com: Feb 11 08:21AM -0800 Destroyed a perfectly good player while the real blame lies with sites like Hulu and YT constantlh "updating" their smart TV apps. |
"Dave M" <dgminala@mediacombb.net>: Feb 11 09:34AM -0600 > somthing thats 60 years old, and waiting for smoke..... (if there is > a problem). > Thanks Not a good idea to try to reform the electrolytics this way. The reason is that the rectifier tube won't start conducting until the Variac voltage is pretty high, and if the electrolytics are very leaky, you risk damaging the power transformer due to excessive current. Best way to attempt reforming the electrolytic filters is to remove the rectifier tube, then disconnect the wiring from the electrolytics. Then, apply a current-limited DC power supply directly to the capacitors, slowly bringing the voltage up to the normal operating voltage. Be sure to monitor the leakage current through the capacitors, not letting it get much above about 10mA or so. Reforming time could vary considerably, depending on the condition of the capacitors. If they are too dried out, it might be impossible to reform them, in which case, replacement is the only recourse. Sixty-year-old electrolytics aren't likely to be good candidates for reforming. There is likely to be more electrolytics in the unit; treat them the same way if they are tied into the B+ supply line. Any low-voltage electrolytics aren't likely to pose such a big risk to the transformer. If you want to limit the risk of damage to the unit, my advice is to replace the capacitors first, then you can be reasonably sure that you won't damage the power transformer. The transformer is the single most expensive and hard-to-find component in the set. By all means, protect it. Cheers, Dave M |
Ralph Mowery <rmowery28146@earthlink.net>: Feb 11 10:38AM -0500 In article <c26t9cde4gr0r0vfcsamfu8am11c1f1eog@4ax.com>, oldschool@tubes.com says... > supposed to work, but I dont like the idea of just plugging in somthing > thats 60 years old, and waiting for smoke..... (if there is a problem). > Thanks Forget about that variac and just put about a 100 watt lightbulb in series with the set. Turn the set on. If the light bulb is burning near full brightness after a few seconds, pull the plug and look for problems. If the bulb is not very bright, make sure you have a fuse in the set for the rted value and plug the set in. If the set had a solid state rectifier tube, you could pull all the tubes and use the variac to see if the capacitors were shorted or some other problems. |
Robert Roland <fake@ddress.no>: Feb 11 02:15PM +0100 >>"It seems to me, the cheaper it is, the higher the chance of finding a >calibration pot inside." >Your theory is blown out of the water, sorry. Those $0.000 ones from Harbor Freight have no pot. You did not read what I wrote, did you? I spoke of chance, and you refute my claim based on one single sample? Not exactly solid statistics. -- RoRo |
oldschool@tubes.com: Feb 11 06:04AM -0600 On Sat, 11 Feb 2017 03:31:33 -0600, Foxs Mercantile <jdangus@att.net> wrote: >On 2/10/2017 11:08 PM, oldschool@tubes.com wrote: > > Where can I get a FREE schematic for a Hallicrafters SX-99? ><http://www.myvintagetv.com/Apple%20PDF%20files/Hallicrafters_SX99.pdf> Awesome. Everything I wanted a more.... Thank You! |
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