Our amp turns on and then a few seconds later turns off. We took it to a repair man and he said that 2 chips were gone in it and needed replacing. Thats ok, but I am queering what he wants to charge for his services. For the 2 chips it is $96aus and his labor is a whopping $198aus.
1. How much work is involved in replacing the chips?
2.Would it take 3-4 hours, or are we getting ripped off?
3.And if this is an honest quote, is the amp worth fixing?
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Re: Is it worth fixing at this cost?
Your repairman told you 2chips? the output stage of this amp should have 2pairs of power transistors each channel. that means 4pieces. and besides, my experince in Yamaha(where i worked before) not only we replace the poweroutput transistors but also the drivers. it doesn't cost that much. nor the service fee depends in your area but the cost of power transistor shoud be around US 0.95 that was 5years ago.
I have had this problem a number of times (amp switching on then clicking off within a few seconds).
The amp is clicking off to protect the main circuitry but is often caused by speaker/audio cables shorting out somewhere, even on the case itself. Before you spend any money unhook all the cables, turn the volume to zero then hook up one set of cables at a time, each time you hook up a cable switch the amp on and see if it stays on, if it stays on continue to do this until you find the dodgy connection, fix the connection and you should be up and running. If the amp doesnt stay on with no cables attached then its blown a couple of low cost components. Just look up a yamaha service centre and ask them to look at it and give you a quote. At the end of the day this is still a stunning amp and worth a couple of hundred to fix it.
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Re: Is it worth fixing at this cost?
Any chance you know what chips? Usually when the amp shuts down, it is in protect mode indicating that there is a problem with the final amp stage. The only "chips" involved there are the output transistors. These should run anywhere from $10 each to $25 each depending upon what they are. Is the unit worth fixing? Probably. Update this with the details from the estimate and I'll try to answer questions 1&2 for you.
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I had the same problem, i took it to a tv repair shop and the said it would be 3-$400 to fix so i just bought a new one but the repair man said the the main board the one with all the inputs and the power supply were bad. U can buy the main board for about $150 and fix it ur self... bth the power supply also cost about $150 as well but i would replace the main board first and see if that fixes ur prob
My tv didn't turn green, but the red separated significantly. It started off happening after a few minutes of being on (I suppose the defective part was "warming up"), then it got to where it was like that immediately upon turning the tv on. In my case, I had to pay a tv repair man $350 for a new part. There are 2 microcircuits that control the color alignment--one that controls the red only, and the other controlls the other 2 colors, blue and green I believe. Maybe your part is the blue/green controller, mine was red. The repair man said these parts fail so rarely they don't stock the part. The cost of repair may be different for a different part, but either way you have to choose if it's worth that cost to you. If you get rid of it, I'll buy your tv stand ;-), I bought mine from a friend and didn't get the stand in the deal.
My parents bought the same tv, TV ran fine for 2 years then started giving them problems. Blue light comes on then few seconds later turns to yellow. Turn tv off then back on it worked, until last week it would not turn on.
Took it to a repair shop they said it was a bad power supply and it will cost 50$ for this check up, as it turns out the total bill would be $650 minus the original $50 it would only cost you $600.
Needles to say i took the tv home with me. Since they were not going to use it i started looking at it took the back off, removed all heat shiels ect. Took my magnifing glass out and started looking at the power supply come to find out the part was made in China, it was missing a solder joint, pulled my old soldering gun out, five minutes later the tv came back to life.
I repaired a convergence problem on this model by locating IC8C01 and IC8C02, the two large convergence chips on the main pcb(center board) and solder all the leads making sure not to leave any solder bridges! The unit was over 4 years old and used often. Those chips get pretty heated and make the solder brittle and crack around the leads.