Yamaha HTR 3063 (RX-V367) no sound or video - Page 1
Forum section: electronics / repair

author: abhi1981
author_rank: Regular Contributor
timestamp: July 30, 2021, 11:22:27 am
content: Hello,I have a Yamaha HTR 3063 (RX-V367), which has now been dead for several years.It worked fine for the first 2 - 3 years, then first the HDMI video went out and then later the HDMI sound also. Not even analog sound works. All this happened just after warrantyThe front display is good, all the controls work, the relays click, volume control works, but that's all.The service center is charging almost 50% of its price in repair. They will change the HDMI board.I don't know whether the board is actually bad or they are just trying to make money. How can I test the board?I tried resetting it, but that didn't helpIf the board is beyond repair, can it be used as a stereo amp, by bypassing the digital circuit somehow. Please advise.I have the service manual, but it's too big to attach.

author: ambrosia heart
author_rank: Regular Contributor
timestamp: July 30, 2021, 12:23:20 pm
content: Not even analog sound works. All this happened just after warranty : seems to be DSP problem.This gives me a clue: charging almost 50% of its price in repair. They will change the HDMI board (Japan brandscompany policy)Download service manual (your model)See p.30 and then see 44 to confirm if DSP goes wrong.

author: abhi1981
author_rank: Regular Contributor
timestamp: July 30, 2021, 02:38:35 pm
content: You are right, its a DSP problem. What to do next?

author: ambrosia heart
author_rank: Regular Contributor
timestamp: July 31, 2021, 03:11:49 am
content: See pm and photos

author: abhi1981
author_rank: Regular Contributor
timestamp: July 31, 2021, 07:26:41 am
content: Thank you very much ambrosia.This is the first time in years that I received a solution to my problem.Now, atleast I know it's the DSP chip.Thanks again for explaining everything so well.I will get back to you with further developments.

author: abhi1981
author_rank: Regular Contributor
timestamp: July 31, 2021, 07:34:18 pm
content: Just checked all the DSP pins for continuity with motherboard, and they all seem good. I put one lead of multimeter on the chip leg and another on the nearest connection. Is this method OK??Checked the voltages of pins 1 to 36 (a job requiring great patience)Will check the remaining pins tomorrow.PIN# Voltage1 02 1.493 3.154 05 06 07 08 1.149 010 3.1711 012 013 014 3.1715 0161.1417 1.4818 019 3.1320 1.1421 022 023 0241.1425 1.1426 027 3.1728 3.1329 3.1330 031 3.1732 3.1633 1.1434 3.1635 3.1336 0

author: abhi1981
author_rank: Regular Contributor
timestamp: August 01, 2021, 03:55:31 pm
content: Pin 37 to 72. Lots of fluctuation37 2.69-3.1738 3.1739 3.1740 041 0.9642 3.1743 0.8244 1.1445 0.8-046 1.0-047 048 0.88-049 1.0-050 3.1751 3.17-052 053 1.1454 055 1.45-056 3.17-057 1.1558 059 0-0.560 3.1761 0-0.362 063 0-0.964 3.17-065 1.1466 067 3.1768 3.1769 070 1.6-1.5971 3.1772 0

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 02, 2021, 03:50:53 am
content: Quote from: abhi1981 on August 01, 2021, 03:55:31 pmMeasuring ALL values of a dsp chip are not important in your case.When you troubleshoot a hdmi board, all voltages MUSTmeasure by an oscilloscope. This is a guideline fromservice dept. Why see pm.What you need is an oscilloscope to measure if the signalgenerated from the main CPU is ok. This signal tells theDSP to work properly. See you tube I sent to you via pm before.You must make sure this signal is present & ok (comparing youtube film); otherwise even you replace the DSP chip, it willnot work properly. This explains why HDMI board is the hardestpart in troubleshooting an AV-amp. Remember measure voltages byan oscilloscope. JUST to measure ALL VDD points is enough.Bad soldering joints in HDMI board hardly found, trust me.Tell you a story when I troubleshooteda HDMI board of onkyo in 2014. This storytold you this signal was so important.See pm.How to measure the signal. See pmNo need to measure all voltages of a dsp chipjust measure the voltages supplied to dsp chip VDDsBasically ALL VDDs connected to a small capacitors,why connected to a small cap see pm.I do not have time to help you to check voltages ALL, just DIY.comparing with the marked ones on service manual, just 3.3VAsk your friends,old classmates, colleagues,neighborhoodor university profs. (if you studied science) to borrowan oscilloscope of about (10-20MHz) to measure that signal.Once this signal is ok, you can fix this amp.If everyone in your country HATES you,sorry, you areunable to borrow an oscilloscope.LOL. Call friends tohelp you!!!No oscilloscope, no talk.

author: abhi1981
author_rank: Regular Contributor
timestamp: August 02, 2021, 04:28:54 am
content: Oscilloscope very very expensive in India. Very few people have it, And they HATE meCan the receiver be used as an analog stereo amplifier, by conecting to the amp board directly?

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 02, 2021, 06:11:57 am
content: Quote from: abhi1981 on August 02, 2021, 04:28:54 amOK.Borrow this. I will tell you how to measure tomorrow.

author: abhi1981
author_rank: Regular Contributor
timestamp: August 02, 2021, 08:32:34 am
content: I have this

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 03, 2021, 02:45:52 am
content: Normally, end users reset their amp by pressing buttons. Now I am tellingyou how to reset your amp by a wire. Steps see pm video and photo.Do this experiment to reset your amp first, then dsp.Structure of amp reset and dsp reset are same. (photo upload later)Borrow an analog mutimeter with 0.5V measurement is a must.

author: abhi1981
author_rank: Regular Contributor
timestamp: August 03, 2021, 01:09:27 pm
content: Oh dear !!!! I threw away my analog meter about 15 yrs back(it was broken anyway)I'll try to arrange one.Thanks for all the help ambrosia

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 04, 2021, 02:31:15 am
content: Just wait, I will give you a full picturetomorrow. Don‘t do the steps today.A more detailed steps will send toyou through pm. Be patient.

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 05, 2021, 06:51:51 am
content: Remember to cover ALL 220V input buy a cardboard such asthe large power transformer (see photo) and the standbyboard to prevent accidentally touching of the live wire.This is lastest version see pm.print it out and read it carefully.Be patient!!! when doing these 23 steps.Be careful during voltage measurement. Don't short the pins.such as red probe making pin 1 and 2 touch each other .I recommend using a needle see photo.Preliminary test is very important. Why? Watch a video on you tubeI sent to you via pm. This is a reset problem of a pioneer av-amp vsx, unfixable. This amp remains in my home. Thewaveform, oh dear, fucking weird , never goes to zero.It should go back to zero line!! (compare that one withthe yamaha reset I sent you before)When ALL (reset and voltages of dsp chip vcc) are ok, replace the dsp chip.Don't forget to find a tech with a good word of mouth o f desolderingand soldering techniques. Tech. needs to remove 144pins dsp chip andresolder it back to HDMI board. Watch him and learn some skill (paylesson fee for the technique of desoldering and resoldering 144 pins dsp chip)Important thing speak 3 times:Don't DIY. Don't DIY. Don't DIYLet a talented tech. earn such money.-End-

author: abhi1981
author_rank: Regular Contributor
timestamp: August 05, 2021, 08:13:57 am
content: Dear Ambrosia, you are a genius.. You have very good knowledge. You have explained everything so well.The so called 'techs' here in India, don't understand the difference between voltage and current, leave alone digital electronics. At the most they can repair old analog circuits by hit and trial.Aroung 15 yrs back, people used to repair computer motherboards (when motherboards were expensive), but ever since they became cheap, no one repairs them now.The DSP chip or any other chip is not available anywhere. Aliexpress was one option, but that too is banned in India after the pandemicI might get a used board which will cost me atleast $70. I had purchased the receiver new for $200 (at 50% discount). I can even get a used amplifier for $100. So, it is not economical to get it repaired from anyone.Because of these reasons, it will have to be a DIY job.I might learn to do it myself, since I have nothing to lose.

author: abhi1981
author_rank: Regular Contributor
timestamp: August 05, 2021, 04:50:35 pm
content: Just ordered an analog meter today. I'll get it on saturday.How are these cheap $20 oscilloscopes??

author: abhi1981
author_rank: Regular Contributor
timestamp: August 14, 2021, 04:36:19 pm
content: Can we feed analog audio signal directly to IC21???Maybe this way it can be used as a power amplifier. I can connect it to my Denon amp. Please advise.

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 15, 2021, 03:03:58 am
content: Quote from: abhi1981 on August 14, 2021, 04:36:19 pmTurn on the amp.Take Photo front panel, I will tell you. See photoMy favorite scene, salute!

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 15, 2021, 06:15:09 am
content: Brother, amp must be switched on , like thread #3.Front panel must lit up. See photosNo Diag mode.

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 15, 2021, 08:40:29 am
content: Quote from: abhi1981 on August 14, 2021, 04:36:19 pmIf you really want to do this step. Ok, I will tell youthe steps tomorrow.You will suffer the consequence--- burn all speakers when volume is too high or a large dc output caused by voltage amp faulty or power amp transistors shorted, however.If I were you, I would sell it out. It is up to you.I have already told you the risk and consequence.See pm

author: abhi1981
author_rank: Regular Contributor
timestamp: August 15, 2021, 11:22:49 am
content: OH DEAR more consequencesNo one will buy a dead amp. It can be used only for spares.

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 16, 2021, 02:48:35 am
content: Quote from: abhi1981 on August 15, 2021, 11:22:49 amCan we feed analog audio signal directly to IC21???Maybe this way it can be used as a power amplifier. I can connect it to my Defnon amp. Please advise.Steps to do see pm.The risks and consquences I mentioned before can be solved by a little bit of money $$.Reason see pm also.If you want, I will pay for you and buy it for you from taobao at cheap pricecomparing aliexpress.What I need is your address.Or you can buy it from herehttps://www.aliexpress.com/wholesale?catId=0&initiative_id=AS_20210815183313&origin=y&SearchText=speaker+delay+boardI recommend this one from taobaohttps://item.taobao.com/item.htm?spm=a1z0k.7385961.1997985097.d4918997.2de029d3CUG1qW&id=617451080348&_u=t2dmg8j26111This board protects precious spks from damages by using upc1237with regulated and stabilized dc supplied from LM7812.Relay so beautiful Omron GOOD brand. Look at the board. It has a power led to tell you the board is now working for you.Fabulous and Gorgeous!!!How much is this fucking thing? 26HKD for kit and soldered 28.5HKDSO cheap. They are Fabulous and Gorgeous!!! 10HKD shipped to destined stationfor you to pick up in HK.This fucking thing helps you to prevent precious spk from getting damaged.If I were you, I would buy it.

author: abhi1981
author_rank: Regular Contributor
timestamp: August 16, 2021, 05:54:22 am
content: Taobao banned tooThis one is available on Amazon India. Is this any good??https://www.amazon.in/WEON-Speaker-Protection-Monitoring-Amplifiers/dp/B07Y6Q31LD/ref=asc_df_B07Y6Q31LD/?tag=googleshopdes-21&linkCode=df0&hvadid=396986161911&hvpos=&hvnetw=g&hvrand=7103835881909799196&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9301955&hvtargid=pla-838667950751&psc=1&ext_vrnc=hi

author: ambrosia heart
author_rank: Regular Contributor
timestamp: August 16, 2021, 06:17:44 am
content: Quote from: abhi1981 on August 16, 2021, 05:54:22 amAbso-fucking-lutely OK. Buy this one.