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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On Fri, 15 Jan 2010 04:02:34 -0800
Daniel Prince wrote: I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. The height seems to vary between about 25 percent and 75 percent. The problem seems to be temperature related. The colder the TV is the smaller the image Is. For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? Minimum of $200 labor, plus parts. Note that a brand new 32" LCD TV can be purchased at Best Buy or Wal-Mart for about $300. IMHO, it would be foolish to even try to repair that Quasar TV. -Dave |
#2
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
I have a 32 inch (CRT type) Quasar TV that has something wrong with
the vertical drive circuitry. The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. The height seems to vary between about 25 percent and 75 percent. The problem seems to be temperature related. The colder the TV is the smaller the image Is. For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? How can I find a good, honest TV repairman? I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. Thank you in advance for all replies. -- Whenever I hear or think of the song "Great green gobs of greasy grimey gopher guts" I imagine my cat saying; "That sounds REALLY, REALLY good. I'll have some of that!" |
#3
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On 15/01/2010 12:02, Daniel Prince wrote:
I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. The TV is about eight or nine years old. snip About how much should I expect to pay to repair this TV? How can I find a good, honest TV repairman? I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. Thank you in advance for all replies. Bin it. Ask/Find on FreeCycle for another. -- Adrian C |
#4
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
"Daniel Prince" wrote in message ... I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. The height seems to vary between about 25 percent and 75 percent. The problem seems to be temperature related. The colder the TV is the smaller the image Is. For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? How can I find a good, honest TV repairman? I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. Thank you in advance for all replies. -- Are you capable of repairing it yourself? I would make a $2 bet it is a bad capacitor. Probably an electrolytic between 10 uf and 470 uf. With a can of freeze mist and a heat gun, it could be isolated in just a few minutes. I agree with the suggestion that it will cost $200 if you have a shop repair it. Just the cost of staying in business. Good luck, Mike |
#5
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
Daniel Prince wrote:
snip About how much should I expect to pay to repair this TV? How can I find a good, honest TV repairman? I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. Thank you in advance for all replies. They'd likely just replace the entire PCB if they can still find one. Probably would cost you around $300. The days of a repairman with the skills to get in their with a scope, troubleshoot the problem, and solder in a new capacitor or drive transistor or replace the flyback transformer are long gone. Of course people are giving away CRT TVs for nothing on Freecycle, or worst case selling them for $50 on craigslist, so it may not be worth getting it fixed. |
#6
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
For about two weeks, I was able to keep the image full size most
of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. If this is a thermal problem (it might not be, but probably is), wholesale parts replacement in the deflection circuitry might fix. You might also try squirting the parts with liquid freezer. |
#7
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
Daniel Prince wrote
I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. The height seems to vary between about 25 percent and 75 percent. The problem seems to be temperature related. The colder the TV is the smaller the image Is. For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? More than a replacement will cost. How can I find a good, honest TV repairman? With great difficulty now that hardly anyone gets stuff like that repaired anymore. The honest one that I have known since when he was a little kid 40 years ago has given up on repairing TVs and now drives a truck. I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. Thank you in advance for all replies. Even replys that tell you to shove your head up a dead bear's arse ? |
#8
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
"Rod Speed" wrote in message ... Thank you in advance for all replies. Even replys that tell you to shove your head up a dead bear's arse ? Another brilliant reply from ****-VADER |
#9
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
Daniel Prince wrote:
I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. The height seems to vary between about 25 percent and 75 percent. The problem seems to be temperature related. The colder the TV is the smaller the image Is. For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? How can I find a good, honest TV repairman? I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. Thank you in advance for all replies. -- Whenever I hear or think of the song "Great green gobs of greasy grimey gopher guts" I imagine my cat saying; "That sounds REALLY, REALLY good. I'll have some of that!" http://tinyurl.com/Johnnys-tv-yelp http://tinyurl.com/Terk-tv-kudzu |
#10
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
Sanity wrote
Rod Speed wrote Thank you in advance for all replies. Even replys that tell you to shove your head up a dead bear's arse ? Another brilliant reply from ****-VADER Yours in spades, child. |
#11
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On Jan 15, 1:02*pm, Daniel Prince wrote:
I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. *The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. *The height seems to vary between about 25 percent and 75 percent. *The problem seems to be temperature related. *The colder the TV is the smaller the image Is. * For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? *How can I find a good, honest TV repairman? *I live in the Southwest corner of Los Angeles county very near the intersection of the 110 and 91 freeways. *Thank you in advance for all replies. -- Whenever I hear or think of the song "Great green gobs of greasy grIS imey gopher guts" I imagine my cat saying; "That sounds REALLY, REALLY good. *I'll have some of that!" This sounds like a capacitor in the vertical/frame circuit. Should be an easy fix and a part costing cents - but given the size of the set, I imagine that taking it somewhere is tricky. A call out will be prohibitive, cost-wise. So I suggest you have a go - do you have a soldering iron and som e solder? (available in a hardware/hobby store I imagine). if you can post some pics of the main pcb , we can guide you to the likely problem area. It would be a pity, and wasteful, to dump an otherwise working set.... -b |
#12
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
"Rod Speed" wrote in message ... Sanity wrote Rod Speed wrote Thank you in advance for all replies. Even replys that tell you to shove your head up a dead bear's arse ? Another brilliant reply from ****-VADER Yours in spades, child. At times (very seldom) you come up with some helpful replies. But most of the time you're a sh-t. Didn't your mother tell you that if you didn't have anything nice to say, keep your mouth shut? Asstard |
#13
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On Jan 15, 1:44 pm, "Rod Speed" wrote:
Even replys that tell you to shove your head up a dead bear's arse ? How about replies that teach you to spell? |
#14
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
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#15
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On Jan 15, 11:06 pm, "Rod Speed" wrote:
wrote: Rod Speed wrote Even replys that tell you to shove your head up a dead bear's arse ? How about replies that teach you to spell? I choose to spell that way, ****wit child. ....but of course. |
#16
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On Fri, 15 Jan 2010 08:25:38 +0800, "Dave C."
wrote: On Fri, 15 Jan 2010 04:02:34 -0800 Daniel Prince wrote: I have a 32 inch (CRT type) Quasar TV that has something wrong with the vertical drive circuitry. The TV is about eight or nine years old. The picture is normal horizontally but it is not full height. The height seems to vary between about 25 percent and 75 percent. The problem seems to be temperature related. The colder the TV is the smaller the image Is. For about two weeks, I was able to keep the image full size most of the time by leaving the set on all the time. For the last three days, It has been about 66 percent all the time. About how much should I expect to pay to repair this TV? Minimum of $200 labor, plus parts. Note that a brand new 32" LCD TV can be purchased at Best Buy or Wal-Mart for about $300. However, as the saying goes, "You get what you pay for." First (and less important), a 32" HD TV has about 20% less vertical picture height thatn the Quasar. Yes, to a certain extent it makes up for it by improved resolution. Still, the objects on the screen are smaller than they were on the 32". You have to go to a 40" HDTV to get the same image height. Second, the $300 TVs are house brands, or otherwise have very limited service availability. The Insignia and Dynex brands available at Best Buy may look good while they are in teh store, but once the warranty expires, the buyer is SOL. The Vizio, Viore, and Haier TVs represent an even worse value. A failure under warranty will get you a replacement TV of uncertain history. In the case of Vizio, the full warrant only covers the first 90 days. After that you have to ship the Tv to Vizio AT YOUR EXPENSE to get a replacement. IMHO, it would be foolish to even try to repair that Quasar TV. -Dave I almost agree with you. It might be worth spending a few minutes with freeze spray and a hair dryer trying to find the thermally sensitive component (probably a capacitor). If that fails (or reveals other problems), it's not worth it. PlainBill |
#17
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
Sanity wrote
Rod Speed wrote Sanity wrote Rod Speed wrote Thank you in advance for all replies. Even replys that tell you to shove your head up a dead bear's arse ? Another brilliant reply from ****-VADER Yours in spades, child. At times (very seldom) you come up with some helpful replies. But most of the time you're a sh-t. Didn't your mother tell you that if you didn't have anything nice to say, keep your mouth shut? It was a joke, you stupid humorless ****wit. Dont laugh, see if I care. |
#18
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
They don't repair them any more, the replace the board which costs more than the whole unit. Throw it off a bridge and buy a new one. What is this guy talking about? CRT TVs are repaired by tracking down and replacing faulty components, not the whole (unavailable) board. |
#19
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
This sounds like a capacitor in the vertical/frame circuit. Should be an easy fix and a part costing cents - but given the size of the set, I imagine that taking it somewhere is tricky. A call out will be prohibitive, cost-wise. So I suggest you have a go - do you have a soldering iron and som e solder? (available in a hardware/hobby store I imagine). if you can post some pics of the main pcb , we can guide you to the likely problem area. It would be a pity, and wasteful, to dump an otherwise working set.... -b That was the most useful reply to the OP |
#20
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
Jumpster Jiver wrote:
They don't repair them any more, the replace the board which costs more than the whole unit. Throw it off a bridge and buy a new one. What is this guy talking about? CRT TVs are repaired by tracking down and replacing faulty components, not the whole (unavailable) board. 20-30 years ago, maybe. Most consumer electronics from the last couple of decades, the components are wave-soldered, purpose-built, and unlabeled, other than on the circuit diagram in the manual you can't get. Around here, bench fee at an electronics shop is fifty bucks to bring it in the door. I think the nearest one is in the next county- the local guy couldn't make his rent. Have to do a cost-benefits analysis. Take how many years you expect it to live, post-repair, and compare that against cost of a similar new one. In almost all cases, home TVs count as disposable, if they are over 2-3 years old. I'm a cheap SOB, so I'll open stuff up and look for any obvious stuff like a popped fuse, or mouse **** on a circuit board that a little spray cleaner will solve, or maybe a cold solder joint on a power lead. But any evidence of fried components, life is too short. -- aem sends... |
#21
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Finding a good, honest TV repairman
On Sat, 16 Jan 2010 23:41:04 -0500, "Jumpster Jiver" no reply wrote:
They don't repair them any more, the replace the board which costs more than the whole unit. Throw it off a bridge and buy a new one. What is this guy talking about? CRT TVs are repaired by tracking down and replacing faulty components, not the whole (unavailable) board. Yea, if you say so... Anything is fixable, IF you want to spend a lot of money. As far as cost effective, I don't think so. Component level diagnostics and replacement is not exactly quick and easy. |
#22
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Finding a good, honest TV repairman
PeterD wrote in
: On Sat, 16 Jan 2010 23:41:04 -0500, "Jumpster Jiver" no reply wrote: They don't repair them any more, the replace the board which costs more than the whole unit. Throw it off a bridge and buy a new one. What is this guy talking about? CRT TVs are repaired by tracking down and replacing faulty components, not the whole (unavailable) board. Yea, if you say so... Anything is fixable, IF you want to spend a lot of money. a lot of time. (= money) As far as cost effective, I don't think so. Component level diagnostics and replacement is not exactly quick and easy. Heh,I built a TEK 2213 o'scope from boards that other TEK techs replaced because they couldn't find the problems on them.Got a free grade-B CRT from the head of CRT Manufacturing,and only had to buy $20 worth of parts to complete it.($20 after my TEK discount!) -- Jim Yanik jyanik at localnet dot com |
#23
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Finding a good, honest TV repairman
On 17 ene, 14:43, aemeijers wrote:
20-30 years ago, maybe. Most consumer electronics from the last couple of decades, the components are wave-soldered, purpose-built, and unlabeled, other than on the circuit diagram in the manual you can't get. 'purpose built and unlabelled' components? what does that mean? In fact, I suspect it means nothing as it is gibberish, although I imagine most components are 'purpose built' for something - resistors for providing resistance for one. Hate to tell you, but that's been going on a lot longer than 2 decades! As for unlabelled, I'd love to know what kind of 'unlabelled' gear I've been missing these last two decades. Those of us who work on these items daily can identify the components by reading those cute little coloured stripes or printed text on them. If need be (for example if a component is destroyed) we even sometimes look for the component reference off the pcb, and consult the schematic. You know, you can even find lots and lots of them for free on sites like eserviceinfo.com. Try it one day. -B |
#24
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
On Sun, 17 Jan 2010 16:10:14 -0800 (PST), b
wrote: On 17 ene, 14:43, aemeijers wrote: 20-30 years ago, maybe. Most consumer electronics from the last couple of decades, the components are wave-soldered, purpose-built, and unlabeled, other than on the circuit diagram in the manual you can't get. 'purpose built and unlabelled' components? what does that mean? In fact, I suspect it means nothing as it is gibberish, although I imagine most components are 'purpose built' for something - resistors for providing resistance for one. Hate to tell you, but that's been going on a lot longer than 2 decades! Custom ASICs and components with their labels either removed or with the box manufacturer's part numbers. If you've been around that long and haven't seen these, you're blind. As for unlabelled, I'd love to know what kind of 'unlabelled' gear I've been missing these last two decades. Those of us who work on these items daily can identify the components by reading those cute little coloured stripes or printed text on them. If need be (for example if a component is destroyed) we even sometimes look for the component reference off the pcb, and consult the schematic. You know, you can even find lots and lots of them for free on sites like eserviceinfo.com. Try it one day. I'd like you to point out these "colored stripes" on SMT devices (almost everything is, anymore). Most SMT devices, particularly capacitors aren't marked with value. If you can find a schematic *maybe* it'll help. |
#25
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Finding a good, honest TV repairman
On Jan 17, 4:10*pm, b wrote:
On 17 ene, 14:43, aemeijers wrote: 20-30 years ago, maybe. Most consumer electronics from the last couple of decades, the components are wave-soldered, purpose-built, and unlabeled, other than on the circuit diagram in the manual you can't get. 'purpose built and unlabelled' components? what does that mean? It means 'jungle chip' components that were only produced for a few months during one production run for a plant in Singapore, or power packages with undocumented innards (maybe a Darlington and some bias resistors, or maybe something else). Or it means little surface mount chip components, with no printable surface for writing on. Diode? Zener? Varactor? Fuse? Who can tell? It also means programmed chips (PIC or PAL, gate arrays, or SOC microprocessors). Anything you can swap for a known-good part gives, at least in principle, a repair option. On a 'modern' consumer item, there's lots of no-repair-option components. Even if you KNOW it's a bad flyback, maybe the only thing you can do is order a full deflection board (about $400 for an old Apple iMac). When the gizmo turns six years old, maybe you can't even get the $400 part. |
#26
Posted to misc.consumers,sci.electronics.repair
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Finding a good, honest TV repairman
"aemeijers" wrote in message
... Jumpster Jiver wrote: They don't repair them any more, the replace the board which costs more than the whole unit. Throw it off a bridge and buy a new one. What is this guy talking about? CRT TVs are repaired by tracking down and replacing faulty components, not the whole (unavailable) board. 20-30 years ago, maybe. Most consumer electronics from the last couple of decades, the components are wave-soldered, purpose-built, and unlabeled, other than on the circuit diagram in the manual you can't get. Around here, bench fee at an electronics shop is fifty bucks to bring it in the door. I think the nearest one is in the next county- the local guy couldn't make his rent. Have to do a cost-benefits analysis. Take how many years you expect it to live, post-repair, and compare that against cost of a similar new one. In almost all cases, home TVs count as disposable, if they are over 2-3 years old. I'm a cheap SOB, so I'll open stuff up and look for any obvious stuff like a popped fuse, or mouse **** on a circuit board that a little spray cleaner will solve, or maybe a cold solder joint on a power lead. But any evidence of fried components, life is too short. -- aem sends... This is nonsense, from someone who has no idea what he is talking about. This set likely has a rather trivial problem in the vertical output stage that we repair at the component level all the time for around $100. Leonard |
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