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"pfjw@aol.com" <pfjw@aol.com>: Mar 05 05:01AM -0800 On Friday, March 4, 2016 at 10:24:44 PM UTC-5, Phil Allison wrote: > pf...@aol.com wrote:   > I don't buy your story of the 1N4004 diode being reversed, 6550s draw over 500mA each with positive grid bias and the amp would have quickly blown up if that were the case.   > ... Phil   Well, when I put the diode in correctly (per the schematic), the hum reduced greatly and the amp draws about 30 watt less than before. When new caps arrive, I will try them out. Could also be that the diode was bad in the first place, not sure as this is the first time I checked it.   Peter Wieck Melrose Park, PA

Boris Mohar <borism_void_@sympatico.ca>: Mar 05 09:11AM -0500 >Well, when I put the diode in correctly (per the schematic), the hum reduced greatly and the amp draws about 30 watt less than before. When new caps arrive, I will try them out. Could also be that the diode was bad in the first place, not sure as this is the first time I checked it.   >Peter Wieck >Melrose Park, PA     It could be that the original diode was Selenium which has much larger Vf. -- Boris   --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

legg <legg@nospam.magma.ca>: Mar 05 09:56AM -0500 On Sat, 05 Mar 2016 09:11:39 -0500, Boris Mohar   >>Peter Wieck >>Melrose Park, PA   >It could be that the original diode was Selenium which has much larger Vf.   This is clearly the case in images of this model and later schematics also show a 2W 6K8 shunt resistor across the first filter cap.   RL

DaveC <not@home.cow>: Mar 01 08:58AM -0800 When sizing a belt:   for example, an old flat, wide (10 mm?) capstan belt measures 9 inches on the "belt measurer-thing", how much do you subtract when shopping for a replacement size?   And for the 3-inch tape-counter belt (round cross-section, "o-ring")?   Thanks.

Look165 <look165@numericable.fr>: Mar 01 12:53PM +0100 Hello,   I need a part from Philips (shaver HQ6890).   It is the power control board.   It is no more available.   If someone has this part, please help me.   I have a recurring problem of recharging the batteries.   They are brand new.   The charging process seems OK but no heat and batteries KO after 2 seconds.   The board is P/N 4822 214 13061.   The shaver doesn't operate with the mains power supply which is OK, so it is a problem with the charging circuitry which is common to the motor when operated with the mains.   I checked with the schematic, but everything interferes with everything... it's quite a gas plant.

N_Cook <diverse@tcp.co.uk>: Mar 01 03:24PM On 01/03/2016 11:53, Look165 wrote: > when operated with the mains.   > I checked with the schematic, but everything interferes with > everything... it's quite a gas plant.   That bit of ebay for a guaranteed non-worker, for a parts-mule? is there a generic name for that bit of flea-bay ?

"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 04 07:28PM "Kenny" wrote in message news:Q7CdnfstNZK9_EvLnZ2dnUU78W3NnZ2d@brightview.com...   "DaveC" wrote in message news:0001HW.1C8602AB004FE09010FDF73CF@news.eternal-september.org...   Looking for roller rejuvenator that you can recommend (ie, have used). Not Google results…     I've seen several brands, but it's hard to judge from a distance.   One personal recommendation beats a hundred choices.   Thanks! I used to repair VCR's and always used Platenclens to revive the pinch rollers. Also works well on audio tape deck rollers and printer rollers.   kenny           I'll second that, it works well on pinch rollers anyway, and isn't particularly noxious.   It also isn't an aerosol despite being in a suspicious container, it's a pump thing.   http://www.amazon.co.uk/Automation-Facilities-Platenclene-Cleaning-Spray/dp/B0012IKSHO     Gareth.

Jon Elson <elson@pico-systems.com>: Mar 04 11:37AM -0600 Trevor Wilson wrote:     > **Thanks for asking. I've decided to head in a completely different > direction. I've been able to source one of these:   > http://au.pcmag.com/hp-laserjet-enterprise-500-color-mfp- m575dn/1374/review/hp-laserjet-enterprise-500-color-mfp-m575dn# > that has swapped out all it's printers from one section) and was factory > serviced a couple of months ago. I'll be checking print quality and > collecting it next week.   Well, that may be a good plan if you really need a color laser. I got a color laser off the loading dock at work, it had a sticky clutch solenoid, and after fixing that, it generally works. But, the print quality is mediocre, and it uses a HUGE amount of toner every time you turn it on, or if it has sat for more than 30 minutes, it has to "recalibrate".   But, I've had good luck fixing the 2 monochrome printers we have here.   Jon

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