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nick <chrmiss@gmail.com>: Nov 13 05:54PM -0800 I bought one of these as not working and am looking for a scanned copy of the service manual or a schematic so I can troubleshoot it. It seems to not be outputting the full voltage when loaded to about 400mA it only outputs at around 5-8 volts. |
mike <ham789@netzero.net>: Nov 13 07:18PM -0800 On 11/13/2014 5:54 PM, nick wrote: > I bought one of these as not working and am looking for a scanned copy of the service manual or a schematic so I can troubleshoot it. It seems to not be outputting the full voltage when loaded to about 400mA it only outputs at around 5-8 volts. I have a scan of a schematic for a HR40-5. It has a 60Hz switching pre-regulator that's a nightmare. If you can't find the right one, I can email this one. |
John-Del <ohger1s@aol.com>: Nov 13 03:09PM -0800 > > I ended up throwing out the Bare crap and bought a Circuit Works silver paint pen. The traces I made to replace the missing traces on the plastic membrane keyboard were about an ohm for an inch IIRC. What I do remember is that I made several samples traces on a plastic sheet before committing to the repair, and a couple of them were *much* higher in resistance than they should be. Circuit Works recommended shaking the pen for a short time, but if you get one, shake the beejeesus out of it for 10 minutes or more. Short shake times result in high resistance. On Tuesday, November 11, 2014 3:48:29 AM UTC-5, N_Cook wrote: > I hope you were aware that: > You paint a patch of the paint, let it dry , and then score lines in it > with a scalpel to make the "insulators" The original keypad was made using several layers of plastic sheets, with the original traces painted on with no solder resist applied on top. I put some adhesive tape down along the path of the original traces, painted between, and removed the tape. It looked and ohmed out (yes, ouch) the same as the original, so no insulator was needed. But will you explain the score lines making insulators? |
"Arfa Daily" <arfa.daily@ntlworld.com>: Nov 13 05:28PM <dansabrservices@yahoo.com> wrote in message news:48b671dc-89d3-403b-8142-5fd04178dd30@googlegroups.com... > Any particular problem you are addressing? I may also have service > bullitens. > Dan It has no 'proper' output. A bit of hum-y noise and that's it. Display is normal. Appears to tune normally, but I'm sure it isn't. Looks like a PSU problem or maybe a rail getting dragged down somewhere by a leaky rail decoupling cap as used to be common on all sorts of Pan gear back in the day. I picked one of the IF processor chips at random and looked up the data sheet on it to find the Vcc pin. The sheet claimed a Vcc of 14 volts, but there's actually only about 5 volts on the pin. I tried following the print back, but it rapidly starts jumping around the board on wire links and print 'splits'. It's really not worth spending the time on trying to trace where the rail comes from, and what decouplers are hanging across it, but it would of course be a very simple fix with the benefit of a schematic. If all else fails, I can get a download copy for $4.99 of the 'net, but cheapskate as I am ... d;-) Arfa |
dansabrservices@yahoo.com: Nov 13 10:04AM -0800 HIFIENGINE.COM has teh ST-x999l model. Close enough? Create an account for yourself and look in the manual section under Technics (Panasonic is also there, but does not have these). Dan |
"Tom Miller" <tmiller11147@verizon.net>: Nov 13 01:29PM -0500 "Arfa Daily" <arfa.daily@ntlworld.com> wrote in message news:US59w.918017$cV1.639726@fx14.am4... > schematic. If all else fails, I can get a download copy for $4.99 of the > 'net, but cheapskate as I am ... d;-) > Arfa Have you checked the power supply bulk capacitors for a high esr cap? Sure sounds like it could be an issue. |
"Arfa Daily" <arfa.daily@ntlworld.com>: Nov 13 07:00PM <dansabrservices@yahoo.com> wrote in message news:e49ef7cf-8d8a-4402-a0b5-7073089de4f1@googlegroups.com... > for yourself and look in the manual section under Technics (Panasonic is > also there, but does not have these). > Dan I've already got a HiFiEngine account. I'll go look. Thanks. In the meantime I have been sent a photo by Nigel. Haven't had a chance to have a close look at it yet to see if the voltages etc are readable Arfa |
"Arfa Daily" <arfa.daily@ntlworld.com>: Nov 13 07:03PM "Tom Miller" <tmiller11147@verizon.net> wrote in message news:m42tat$51u$1@dont-email.me... >> Arfa > Have you checked the power supply bulk capacitors for a high esr cap? Sure > sounds like it could be an issue. First check, always. Nothing jumping out. Main rail off the reccy is there and looks about as ripple-free as you would expect pre the regulators ... Arfa |
"Tom Miller" <tmiller11147@verizon.net>: Nov 13 02:08PM -0500 "Arfa Daily" <arfa.daily@ntlworld.com> wrote in message news:Sf79w.133058$7w2.123520@fx01.am4... > First check, always. Nothing jumping out. Main rail off the reccy is there > and looks about as ripple-free as you would expect pre the regulators ... > Arfa Ok, yes. Knowing you, that was a dumb question. Good luck. |
dansabrservices@yahoo.com: Nov 13 11:34AM -0800 I'll still look on the CDs too. Just thought of the website. Dan |
"Arfa Daily" <arfa.daily@ntlworld.com>: Nov 13 10:32PM >> regulators ... >> Arfa > Ok, yes. Knowing you, that was a dumb question. Good luck. Why thank you kind sir ! Very nice of you to say so :-) Arfa |
"Arfa Daily" <arfa.daily@ntlworld.com>: Nov 13 10:32PM <dansabrservices@yahoo.com> wrote in message news:80889e1d-f127-4731-ae74-da38da98616f@googlegroups.com... > I'll still look on the CDs too. Just thought of the website. > Dan Thanks Dan. Appreciate the effort. Arfa |
alienpredatorpredalie6059@gmail.com: Nov 13 12:25PM -0800 On Monday, May 1, 2000 3:00:00 AM UTC-4, Mr. Hooples wrote: > Shoreline Electronics > Repair > jsti...@snet.net does anyone know how to fix the size like the pincushion and trapezoid |
"Arfa Daily" <arfa.daily@ntlworld.com>: Nov 13 05:20PM > I tried Marmite and just plain didn't like it. A store called "The > British Pantry" that I used to live near sold it. They suggested > spreading it on crackers. I tried it and decided not to try it again. Ah, OK. It is definitely an 'acquired taste' but kids here tend to be brought up on the stuff - maybe not so much now as in the past though. Marmite themselves make a big thing of its 'bipolar' reputation - you either love it or hate it, there's really no in-between ground. They have even run adverts showing people hating it. I wonder what sort of crackers they were recommending that you put it on ? Most of the crackers that I've bought over there when visiting, would not be very suitable. Ritz-style ones would be a definite no-no, and it's not very good on things like cream crackers or water biscuits either. I wonder also if they told you to put it directly onto the crackers, because that is a no-no, as well. You must have butter on the 'substrate' first. You can just about get away with butter substitute spreads, but 'straight' butter is best, and not the whipped stuff if you can get unwhipped. A good place to start with Marmite, is on white bread. Not any of the 'sweet' varieties that are common in the U.S. If you can get a plain white fresh-baked crusty loaf, all the better. Spread with butter first, then with the Marmite - and keep it thin. Personally, I pile the stuff on with a trowel, but that's because I've been eating it for 55 years ! Many people like it on toast. I'm not a great fan of that, but same again - butter first. As for 'crackers' its rye crispbreads that you want really. A common one here is Ryvita and I think you have that your side of the pond as well. If not, I'm sure there is an equivalent. Again, a decent layer of butter first, then a thin layer of Marmite. If you do decide to try again, using it for a cooking flavouring, just try it as described on bread on crispbread while you're at it. You might just be pleasantly surprised ... :-) Arfa |
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