| jjhudak4@gmail.com: Apr 17 07:21AM -0700 This will be my weekend project but before I tear into it, I wonder if anyone has any experience with these or knows of a schematic? This is the third one I've had. First one quit cooling, the second one and this one stopped heating. Given my experience with failure rate, these things seem poorly designed. I am guessing it contains Peltier module and if that is true, I suspect the module may be dead or the drive circuity may be the culprit. Any insight from anyone having experience with this is appreciated. J |
| "Paul Hovnanian P.E." <paul@hovnanian.com>: Apr 16 01:00PM -0700 > The short only occurs if the primary interlock switches fail, no other > situation. At which point no-one cares what it does to equipment life > expectancy. The shorting monitor switch closes every time the door opens. If the timer shuts off the magnetron and you open the door a few seconds later, there is no effect. If you open the door on a running oven, even if the series interlock switch removes AC power from the HV transformer, the shorting switch may close within milliseconds of that. So what is the time constant of the decaying field in the transformer? And what hapens if you give that field a shorted winding? -- Paul Hovnanian mailto:Paul@Hovnanian.com ------------------------------------------------------------------ My password is my dog's name. My dog is named %8Nk=14hD |
| John Robertson <spam@flippers.com>: Apr 16 09:50AM -0700 On 2020/04/16 2:26 a.m., Jeff Urban wrote: >> I did see one page on line where the discussion about replacing G >with S was you double the size of the original G's emitter resistor. >So, if it was 75R you would change that to 150R. Have you any >knowledge of that? > This is not making sense here. What is G and what is S ? From what I heard G was gate, the equivalent of the base in a transistor and S was source equivalent to the emitter of a transistor, the C or D of course it the other one. Collector or drain. My apologies - I was shortening Germanium Transistor to "G" and Silicon Transistor to "S". Considering the context of the discussion I thought it was obvious. Sorry about that! 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." |
| John Robertson <spam@flippers.com>: Apr 16 09:52AM -0700 > On Thursday, April 16, 2020 at 2:26:36 AM UTC-7, Jeff Urban wrote: >> The schematic link does not work, path not found or some shit. > It weere a t7po errorr; Try using http instead of fttp Indeed, my mistake (yet again): https://www.flippers.com/pdfs/Seeburg_TSA1_Amp_Schematic_Update.pdf 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." |
| Fox's Mercantile <jdangus@att.net>: Apr 16 12:26PM -0500 On 4/16/20 11:50 AM, John Robertson wrote: > "G" and Silicon Transistor to "S". Considering the context > of the discussion I thought it was obvious. Sorry about that! > John :-#)# The only thing obvious to Jeff is his own inflated self worth. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
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