- What a cheek! - 1 Update
- Sansui QRS5500 quadrophonic receiver - 2 Updates
- PC-controlled multimeter - 6 Updates
| The Real Bev <bashley101@gmail.com>: Jun 24 08:59AM -0700 On 06/22/2018 11:33 PM, N_Cook wrote: > At least you don't need f.c.ing javascript and the inordinate amount of > crap that comes with it , to view just a couple of kbytes of info. > Remember Google bought Deja-news and then proceeded to bastardise usenet. I had real hopes at first... Their original search function was really nice, and then they crippled it. Like google seems to do with everything. I really miss Picasa. -- Cheers, Bev "The almost universal access to higher education here in the US has ruined a lot of potentially good manual laborers." -- Bob Hunt |
| Chuck <ch@dejanews.net>: Jun 23 02:31PM -0500 On Fri, 22 Jun 2018 13:35:43 -0700 (PDT), captainvideo462009@gmail.com wrote: >This is my own receiver. Last year it started taking longer and longer for the protection relay to activate and turn on the speakers I finally took it out of service. I recall that it had no other problems that were evident. I had posted this problem at that time and I think that it was Chuck up in Canada who nailed it immediately. He recommended changing C6 on the protection board and .that resolved the protect relay problem. Now however there is another problem that I never had before. Most of the dial lights including the signal meter light are out and that meter also seems to be inoperative as well. I never had any trouble with any lighting or the signal meter on this receiver. This is a big quadrophonic receiver. The switching is done through the main selector switch and it's a nightmare to get to. A real rats nest. Does anyone who has worked on these recall any common problems with lighting on one of these? I suspect a ground problem because so many of these lamps are in >parallel but it's so crowded in that area you can't see anything. I Really appreciate any help. Lenny Lenny, See my answer on the Yahoo tv-repair group. Chuck |
| captainvideo462009@gmail.com: Jun 24 12:57AM -0700 > This is my own receiver. Last year it started taking longer and longer for the protection relay to activate and turn on the speakers I finally took it out of service. I recall that it had no other problems that were evident. I had posted this problem at that time and I think that it was Chuck up in Canada who nailed it immediately. He recommended changing C6 on the protection board and .that resolved the protect relay problem. Now however there is another problem that I never had before. Most of the dial lights including the signal meter light are out and that meter also seems to be inoperative as well. I never had any trouble with any lighting or the signal meter on this receiver. This is a big quadrophonic receiver. The switching is done through the main selector switch and it's a nightmare to get to. A real rats nest. Does anyone who has worked on these recall any common problems with lighting on one of these? I suspect a ground problem because so many of these lamps are in parallel but it's so crowded in that area you can't see anything. I Really appreciate any help. Lenny « Back to Inbox ‹ Newer 3 of about 86 Older › Expand all messages Expand all Print conversation Print Open conversation in new window New window Sansui QRS5500 receiver Inbox Unstarred Klem Kedidelhopper Fri, Jun 22, 2018 at 4:32 PM 2 hidden messages – Show Unstarred chuck3564@yahoo.com [tv-repair] Sat, Jun 23, 2018 at 2:29 PM Add star Klem Kedidelhopper<captainvideo462009@gmail.com> Sat, Jun 23, 2018 at 7:39 PM To: tv-repair@yahoogroups.com Reply | Reply to all | Forward | Print | Delete | Show original I had actually thought of that. It wouldn't be a problem if the lamps were on for each mode. I just wish that I could see the burned section of the switch but it's an impossible jungle of wires. Two weeks ago before I knew about the lighting problem I picked up a 5500 to use for parts, because my quad section has never worked and I have been thinking that it would be nice to swap a couple o boards and see what happens. So I have a switch however there is no way I'm going to tackle replacing that switch. I thought o something else. Back in the late 60's and early to mid seventies when VHF TV tuners were built with multisection switches I used to run across a fair number of them that just wouldn't respond to a good cleaning with a silicon based tuner cleaner. Then they came out with "Blue Stuff". As long as you didn't spray it on the neutralizing capacitors it was a miracle of bringing back intermittent tuners to life once again. I So I thought I might try degreasing the switch first and then give it a good cleaning with Blue stuff. and then see what happens. Probably nothing will come of it but it doesn't hurt to try I guess. Lenny |
| Randy Day <randy.day@sasktel.netx>: Jun 23 11:22AM -0600 I'm looking for recommendations on a computer-controlled multimeter to automate a test procedure. I'd like to be able to have the computer select voltage, resistance, etc., choose various ranges in each, and transmit readings to a PC. I see a lot of units that communicate, but I'm unclear whether they allow functions and ranges to be set, or whether they just transmit results from the range selected on the front dial. The one unusual requirement is a high resistance range (e.g. 2000Mohm). ACV/DCV/ohms ranges can otherwise be similar to regular handheld units. Any suggestions? |
| John Larkin <jjlarkin@highlandtechnology.com>: Jun 23 11:14AM -0700 On Sat, 23 Jun 2018 11:22:06 -0600, Randy Day <randy.day@sasktel.netx> wrote: >2000Mohm). ACV/DCV/ohms ranges can otherwise be similar to >regular handheld units. >Any suggestions? We use a lot of Keithley and Fluke benchtop DVMs in test sets, with ethernet or USB interface. They can set anything under remote control except for switching between the front and rear-panel inputs. I prefer the Fluke 8845A. It's more stable at microvolt levels, does good AC measurements, and is EMI harder than the Keithleys. It only measures 100M ohms max, but you could do some simple hack to measure gigohms. There are cheap handhelds with interfaces, but the interface won't turn the big range knob. There are also cheap benchtop DVMs, typically Chinese. Might be good enough. -- John Larkin Highland Technology, Inc lunatic fringe electronics |
| Peter Gierschner <oskarx@gmx.de>: Jun 23 09:02PM +0200 Am 23.06.2018 um 19:22 schrieb Randy Day: > 2000Mohm). ACV/DCV/ohms ranges can otherwise be similar to > regular handheld units. > Any suggestions? Here https://www-user.tu-chemnitz.de/~heha/hs/UNI-T/ are some programs for UNI-T or similar multimeters. peter |
| John Robertson <spam@flippers.com>: Jun 23 12:28PM -0700 On 2018/06/23 10:22 AM, Randy Day wrote: > 2000Mohm). ACV/DCV/ohms ranges can otherwise be similar to > regular handheld units. > Any suggestions? Mooshimeter? Doesn't do resistance, but for remote monitoring of voltage and current it is handy...and perhaps the designer is interested in expanding it to resistance. https://moosh.im/mooshimeter/ Handy tool! John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
| Randy Day <randy.day@sasktel.netx>: Jun 23 07:01PM -0600 In article <pgm5g8$ad1$1@news.albasani.net>, oskarx@gmx.de says... [snip] > https://www-user.tu-chemnitz.de/~heha/hs/UNI-T/ > are some programs for UNI-T or similar multimeters. > peter Bookmarked, thanks! Actually we have a Uni-T at the shop; can't remember the model number, though. Given the price of benchtop units that John mentioned, maybe I can run multiple cheap datalogger units switched in with relays; I wondered if there might be a low-cost all-in-one alternative I hadn't seen. |
| Randy Day <randy.day@sasktel.netx>: Jun 23 07:11PM -0600 In article <rKednWCtDNPrArPGnZ2dnUU7-WfNnZ2d@giganews.com>, spam@flippers.com says... [snip] > https://moosh.im/mooshimeter/ > Handy tool! > John :-#)# Wireless doesn't really offer an advantage in this instance, but it's an interesting device. Thanks. |
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