Got this Philips 14" B&W tv ages ago. Symptom : Video muted with no sound. So where would one start? I was thinking maybe tuner section or IF. Turned out the speaker was shorted, the volume was set to high, hence supplies were dropping due to an unnatural load. Disconnected speaker wire and voila, picture was restored. Recoiled the speaker and everything worked fine. Jango.
An insect cocoon between laser and lens of a CD
When I used to repair car cassette players, note, not recorders. All tapes put into this one would come out with the repeated click noise of a vinyl record recorded on them, write-protected cassettes or not. Tiny piece of magnetic material embedded in the pinch wheel
Switch Mode PS of a scope failing to fully power up. Due to spots of mold that had grown on the transparent light path between LED and opto receiver of an encapsulated opto-coupler between control and HV side of the ps
-- General electronic repairs, most things repaired, other than TVs and PCs
Diverse Devices, Southampton, England
On Thu, 08 Feb 2007 02:04:10 -0800, jango2 Has Frothed:
Old Zenith tube set, strange color/video. Open delay line.
-- Pierre Salinger Memorial Hook, Line & Sinker, June 2004
A tossup between the Dumont with the bright vertical line in the middle (like no vertical deflection turned 90 degrees) or the Muntz (*) that depended on the distribution of the wiring to maintain horizontal sweep frequency. Both of these are from my early childhood when I was just learning on other peoples' throwaways.
(*) Muntz was a Chicago-area local manufacturer. The legend beh> Got this Philips 14" B&W tv ages ago.
Sony SL C7 UB Betamax VCR, intermittent chroma on playback.
Colour sub carrier oscillator drifting in and out of lock due to dead and decomposing mouse trapped between chroma board and bottom metal cover.
-- Clint Sharp
Clint Sharp ha escrito:
.....reminds me of one experience I had, Clint! sanyo ec1 chassis tv Dead set. Cause: infestation of cockroaches - most of which were still present - blew open 2 ressitors on the SMPS !
-B.
This lady walked in with a cheap toy synthesizer (musical keyboard) and her 5 year old son in tow and declares it stopped working. I think to myself oh what fun after i fix it i can fool around with it. I eagerly accept it and place it on my lap. I look up and ask her how it conked. She replies " my son threw up on it".
Abd you think that's bad? How about Jerrold JRX series cable TV boxes after cats have pissed in them, and the urine hase eaten all the silver off the tuner boards? They had to be stripped, soaked to clean them, and replace everything in the control head.
-- Service to my country? Been there, Done that, and I've got my DD214 to prove it.
In message , jango2 writes
Oh nasty, reminds me of a Hitachi VT17 top loading VHS machine we got asked to fix, the owner came into the shop and asked if we could fix it or at least assess it for an insurance claim as it'd had something spilled in it. After a little questioning, he admitted that he'd come home from the pub a couple of nights ago, decided that he'd like to watch a film, selected the tape, opened the VCR, leant over to put the tape in and thrown up into the mechanism through the open door. We declined to investigate that one.
-- Clint Sharp
When I was working as an aircraft mechanic in Alaska. A Cessna 172 owner brought his plane into our hanger and wanted a CB radio installed in it. This was back in the late 70's so cb's were fairly popular then. He had one odd request, that I install the CB antenna on the bottom of the aircraft. I suppose he figured it would get better reception there, I really didn't know. Anyhow when I climbed into his plane to start the install, I looked down at the floor to figure out where to route the antenna cable. He had a full size brass Spittoon sitting there full, and more snoose spit on the floor, fuel selector, and flap control handle that had missed the spittoon. I informed him if he wanted me to work on his plane he had to clean the snoose up. He threw a big fit and flew off to find someone else to install his CB.
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