Hey this is Mike I talked to you today I just drained and checked my caps they are good it's really cool watching and learning I'll be sending my amp to gs this week
Thanks Todd for the A06 NPN’s, the A56’s, and the 6488 and the 6491. The Precision Power PC2100 amp is alive, clean signal to the terminals. By the way, he ain’t lying when he says he has a ton of work. Take good care of the Dooogggs!
When using your meter to charge caps, you can reverse your leads and watch it discharge and charge negatively. Sometimes I find a diode there, and I can’t use that method, but I work on all kinds of stuff.
I have a Autotek Meanmachine 1500.1d (2012), its before Maxxsonics took AT in a different direction. It's the Exact same board. And I've had the amp 10yrs...pushing hard. It ran cool all day, 4h road trips, pushing hard. I'm glad I seen this video, because that Super Class D board is what caused mine to go into protection for the first time. I stripped it, and cleaned the board....there was heat traces on the p2d chips at the top of that component you pulled. It runs hot now, but hasn't gone into protection again. Impossible to get ahold of that component, so I guess new amp when it fails completely. Is this a component that will draw more amps from my alt if not replaced? Thanks....great video
@@ellensburgamplifier thanks for such a quick response...is there a place to get a card? I doubt Maxxsonics would supply one...a new amp seems simpler, but I have a very customized install....great video and information btw👍
@@loc6880 Thank you. I make videos only to help others. Cards are not readily available for the most part. The best option is to rebuild the one you have or send the amplifier in for a replacement card if the original card is too damaged. I do carry several of these cards for situations where the original is not usable.
@@ellensburgamplifier well, its appreciated by ppl like me...repairing that card is above my pay grade🤣. 1 more question....can you tell me what the card is called.....so I can ask around the shops.... Thank again
@@loc6880 I call them output drive cards. I have seen them also called system drive cards. In the Perry Babbin world, they are called type 7 output cards.
To change the RCA jack all you do is remove the board from the heatsink and there are typically 3 solder points on the bottom that once unsoldered the RCA jack should fall right out. I can try to add that to the list of videos but it is something that I do not do often.
I have clas d amp mono ..dual rail toroid...ac voltages from each toroid is normal...buta after fecirtier is asymmetric ...or unequal dc..tanks for help
@@titovaio2768 So if you have a difference at the rectifiers then you will have to go back to the power supply and verify that the P-P values for each drive section are the same. A rectifier will only rectify what it is given.
@@ellensburgamplifier the ac voltage from each toroid is the same...either from from each irf44 is equal ...and no heat in all that irf44 ,just about 10 degres warm...im sorry to spend your tima...and sorry for my englis to🙏🙏🙏
@@titovaio2768 Are you using a scope? Is the duty cycle identical? If the peak-to-peak square wave is identical, both in amplitude and duty cycle at the rectifiers, then the common anode/common cathode voltages should be the same if the rectifiers are in good condition.
I working on a md 12 k with noise coming from the speaker out put and after couple seconds some tick tick tick sounds coming through the speaker then go protect with a green light and the red light flickering don't want to damage so any suggestions where to look first
First, I determine if the gate-source resistance values are correct at the output transistors. What is the resistance for - the low side gate for both sides and the high side gates for both sides. We are comparing the two halves of the amplifier. (parallel banks of 5 high and 5 low)
@@ellensburgamplifier jus a follow up on the md 12k after start up makes the sound then the clip light and protect flash so the amps is thinking that's it's clipping so I'm I figure it's a output filtering issues I'm going to try different inductor in it cause the output filtering caps are ok
@@djbell9939 Is there a significant DC offset on the speaker terminals when it starts? When these inductors fail they fail drastically due to the high rail voltage present. When the output caps fail they will in most cases pop.
I was wondering where I could get the cardboard turntable that tells you what resistance the resistor is around 13:36 in the video any help would be appreciated thanks
Ok the reference wheel. The one I have was put out in the 50's but here is a link to a good guy (Steve) that has one for sale. Tell him Todd's Tubes and Testers sent you! www.ebay.com/itm/276369865501?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DbJ3X0MoTlC&sssrc=2047675&ssuid=Q6ZdGeQQSfm&widget_ver=artemis&media=COPY
I have a kac 8105d which blew a power mosfet stp60nf06fp..the amp sat idle for like two years ..later on I just wired it to my car and it just started to smoke.. I did try replacing the mosfet with the same model number ..but as soon as I connect the power and ground (not p.con) the mosfet starts heating up ? What should I do ?
You most likely will need to replace all of the power supply transistors and I would also check the gate resistors to make sure they are within spec. If you show any low resistance values between gate and source then you have to keep digging for the short.
@@siemerrimanjr9060 www.ellensburgamplifier.com/request-a-quote is where you will find the form to submit if you are interested in any repairs. from there I will email you all the information needed to get you going for repairs. You are correct, I may or may not be able to repair your B2 (they are in the list at the bottom of the FAQ page) as it depends on what model of B2 it is and what damage is present. www.ellensburgamplifier.com/FAQS is where most all questions are answered.
Great material, I have one question about the Phoenix Gold car amplifier, I disassembled it and noticed that the transformer, one of the turns is very loose, should I attach it somehow or glue it with some special glue?
Hey Todd! What do you use to remove/install the spring clips for the transistors? Oh and the calculation for the 3 100K resistors is as follows 1/1,000 = 0.00001 x 3 = 0.00003 = 1/0.00003 = 33,333.33ohms
@@ellensburgamplifier It would be a real treat if you made a video on the topic, there's nothing on the internet about those spring clips and only 1 or 2 videos on RUclips
@@E-raticWarrior I will absolutely keep that in mind. I just saw a short and a guy was using a harbor freight pick that I may just make a complete set as the handles are longer than mine. Arthritis makes things harder to do as I age! And thank you for the equation. This is what I like to see posted to help others.
@@E-raticWarrior No apprentices at this time as there is a lack of knowledgeable people in basic electrical theory and troubleshooting for me to bring on.
I have the hfi2000 amplifier and have a chance to buy another. I'm running 2 12in evl 1250rms each subwoofers off it. I think I could use another one. Do you have any idea what the hfi series actually does for power compared to rated? Thanks!
Hello and thank you for the support. I do not know what the clipping output is as I don't dyno amplifiers. You would have to have one put on a dyno to know or you can base it somewhat off of the available rail voltage.
@@ellensburgamplifier Is it similar to using a DMM to set the amplifier gain but would have to use a process of elimination. Because a company can print on the amplifier that it's 1100 watts *cough boss audio* but it has a 25 amp fuse and when running a 50Hz sinewave through the max voltage at the output is 31 volts which would calculate to, with a 4 ohm load
@@E-raticWarrior I feel the end user should always know what the rail voltage is to properly set an amp up. There are so many variables when it comes to output wattage that it is hard to calculate what an amplifier will do. What I do is log the rail voltage at the rectifiers with an input voltage of 12,13,14, and 15 volts (sorry guys I do not support the use of 16 volts, especially with 1:11 transformers) and then figure roughly a 20% loss through the output stage to give a rough idea of the potential clipping voltage. A scope is always the best in my opinion as you can see the sign wave.
@@ellensburgamplifier I just recently found out about plus and minus voltage rails and the fact there's negative voltage, which blew my mind. To be honest the end user wouldn't know what to do with such information without having considerably knowledge about how an amplifier works and because of that they can't sell that end user an amplifier with 5000 Watts printed on it with a 10 or 20 amp because that end user would immediately know that's BS!
I need to replace some IRF3205's but those are discontinued according to mouser. What are you using to replace these? Ebay and Amazon has them but I'm not taking a chance of them being fakes
Thank you for not purchasing components through "other" vendors as they will most likely be counterfeit. If you want to save money and do a lot of repairs LCSC has an excellent price point for the 3205s.
One other question for you. The C3228 and A1275 transistors on the power supply driver board. Mouser doesn't have them. Have you found these anywhere else or do you have an equivalent?
Hey this is Mike I talked to you today I just drained and checked my caps they are good it's really cool watching and learning I'll be sending my amp to gs this week
Thanks Todd for the A06 NPN’s, the A56’s, and the 6488 and the 6491. The Precision Power PC2100 amp is alive, clean signal to the terminals. By the way, he ain’t lying when he says he has a ton of work. Take good care of the Dooogggs!
It was a pleasure meeting you today. Stay safe out there!
@@ellensburgamplifier sure was a pleasure. One day we have to now meet with Sam! Bless up!
Great repair technician here guys!💯
Thank you!
Great video! I was able to fix my amp finally!
Thank you
Thank you for the support!
Learning so much from this video and only at 29 min into it! By chance could i send you my amplifier to fix ?
Hello! It depends on what amplifier you need to have serviced. I do not service all amplifiers and the FAQ page of my site provides more information.
When using your meter to charge caps, you can reverse your leads and watch it discharge and charge negatively. Sometimes I find a diode there, and I can’t use that method, but I work on all kinds of stuff.
Great video brother
Thank you for the support!
Great info, ty Todd!
I have a Autotek Meanmachine 1500.1d (2012), its before Maxxsonics took AT in a different direction. It's the Exact same board. And I've had the amp 10yrs...pushing hard. It ran cool all day, 4h road trips, pushing hard.
I'm glad I seen this video, because that Super Class D board is what caused mine to go into protection for the first time. I stripped it, and cleaned the board....there was heat traces on the p2d chips at the top of that component you pulled. It runs hot now, but hasn't gone into protection again. Impossible to get ahold of that component, so I guess new amp when it fails completely.
Is this a component that will draw more amps from my alt if not replaced?
Thanks....great video
Yes, if there is any issue with the output card you may see a high current situation. It is best to rebuild the whole card.
@@ellensburgamplifier thanks for such a quick response...is there a place to get a card? I doubt Maxxsonics would supply one...a new amp seems simpler, but I have a very customized install....great video and information btw👍
@@loc6880 Thank you. I make videos only to help others. Cards are not readily available for the most part. The best option is to rebuild the one you have or send the amplifier in for a replacement card if the original card is too damaged. I do carry several of these cards for situations where the original is not usable.
@@ellensburgamplifier well, its appreciated by ppl like me...repairing that card is above my pay grade🤣. 1 more question....can you tell me what the card is called.....so I can ask around the shops....
Thank again
@@loc6880 I call them output drive cards. I have seen them also called system drive cards. In the Perry Babbin world, they are called type 7 output cards.
Great Info
Thanks for watching!
Some amps have the “ON” LED powered up by the 15v rail for the op amps. Others have a B+SW circuit that gets powered/switched by remote.
100% correct. Thank you for the support!
Hi Todd welcome back 🥂🤠🎉
Thank you!
If those P2ds are failing, will it draw unnecessary Amps from my Alternator?
Thanks
You should wait little more to heat enough those vias, I can hear how you pull out those pins from cold joints.
How do you replace the RCA jacks on the amp itself, can you do a video on that
To change the RCA jack all you do is remove the board from the heatsink and there are typically 3 solder points on the bottom that once unsoldered the RCA jack should fall right out. I can try to add that to the list of videos but it is something that I do not do often.
Do you work on power acoustic amplifies as well
I have repaired a few different Power Acoustic amplifiers. The most recent being the BAMF 8000.
Ellensburg Washington?
Good ol Central Washington!
I have clas d amp mono ..dual rail toroid...ac voltages from each toroid is normal...buta after fecirtier is asymmetric ...or unequal dc..tanks for help
Remove the output transistors. Is the condition still the same?
I remove allcaps after diode to try...midel pin diode unsolder that to...and from that diode is diferent voltage..the diferent abaut 12 volt..😭👍
@@titovaio2768 So if you have a difference at the rectifiers then you will have to go back to the power supply and verify that the P-P values for each drive section are the same. A rectifier will only rectify what it is given.
@@ellensburgamplifier the ac voltage from each toroid is the same...either from from each irf44 is equal ...and no heat in all that irf44 ,just about 10 degres warm...im sorry to spend your tima...and sorry for my englis to🙏🙏🙏
@@titovaio2768 Are you using a scope? Is the duty cycle identical? If the peak-to-peak square wave is identical, both in amplitude and duty cycle at the rectifiers, then the common anode/common cathode voltages should be the same if the rectifiers are in good condition.
Where did you get the resistance turntable board
If a resistance box is what you are referring to then google "decade resistance box" and many will pop up. Quality is key on these.
@@ellensburgamplifier no it was a card you had that showed the different colors to figure out what was the resistor
Its at 13:36 a card with a turntable you said
I working on a md 12 k with noise coming from the speaker out put and after couple seconds some tick tick tick sounds coming through the speaker then go protect with a green light and the red light flickering don't want to damage so any suggestions where to look first
First, I determine if the gate-source resistance values are correct at the output transistors. What is the resistance for - the low side gate for both sides and the high side gates for both sides. We are comparing the two halves of the amplifier. (parallel banks of 5 high and 5 low)
@@ellensburgamplifier I'll will double check all of that thanks for the tips
@@ellensburgamplifier jus a follow up on the md 12k after start up makes the sound then the clip light and protect flash so the amps is thinking that's it's clipping so I'm I figure it's a output filtering issues I'm going to try different inductor in it cause the output filtering caps are ok
@@djbell9939 Is there a significant DC offset on the speaker terminals when it starts? When these inductors fail they fail drastically due to the high rail voltage present. When the output caps fail they will in most cases pop.
@@ellensburgamplifier will check the voltage
I was wondering where I could get the cardboard turntable that tells you what resistance the resistor is around 13:36 in the video any help would be appreciated thanks
Ok the reference wheel. The one I have was put out in the 50's but here is a link to a good guy (Steve) that has one for sale. Tell him Todd's Tubes and Testers sent you! www.ebay.com/itm/276369865501?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DbJ3X0MoTlC&sssrc=2047675&ssuid=Q6ZdGeQQSfm&widget_ver=artemis&media=COPY
Thank you very much
I have a kac 8105d which blew a power mosfet stp60nf06fp..the amp sat idle for like two years ..later on I just wired it to my car and it just started to smoke.. I did try replacing the mosfet with the same model number ..but as soon as I connect the power and ground (not p.con) the mosfet starts heating up ? What should I do ?
You most likely will need to replace all of the power supply transistors and I would also check the gate resistors to make sure they are within spec. If you show any low resistance values between gate and source then you have to keep digging for the short.
Do you work on b2 audio or cab 22 amps? The b2 is new, I reversedpower and ground during instalation
I am choosy with B2 amplifiers and I do service CAB22 amps. Your B2 will need to have the power supply rebuilt which can be done.
@@ellensburgamplifier where do I send the cab? So are you saying you will or won't work on the b2?
@@siemerrimanjr9060 www.ellensburgamplifier.com/request-a-quote is where you will find the form to submit if you are interested in any repairs. from there I will email you all the information needed to get you going for repairs. You are correct, I may or may not be able to repair your B2 (they are in the list at the bottom of the FAQ page) as it depends on what model of B2 it is and what damage is present. www.ellensburgamplifier.com/FAQS is where most all questions are answered.
Great material,
I have one question about the Phoenix Gold car amplifier, I disassembled it and noticed that the transformer, one of the turns is very loose, should I attach it somehow or glue it with some special glue?
I would get a bottle of Gorilla glue clear grip and secure down the windings and anything else that is loose.
Hey Todd! What do you use to remove/install the spring clips for the transistors? Oh and the calculation for the 3 100K resistors is as follows 1/1,000 = 0.00001 x 3 = 0.00003 = 1/0.00003 = 33,333.33ohms
This is a tough question to answer as I use 3 different modified tools. I would have to show these to make sense.
@@ellensburgamplifier It would be a real treat if you made a video on the topic, there's nothing on the internet about those spring clips and only 1 or 2 videos on RUclips
@@E-raticWarrior I will absolutely keep that in mind. I just saw a short and a guy was using a harbor freight pick that I may just make a complete set as the handles are longer than mine. Arthritis makes things harder to do as I age! And thank you for the equation. This is what I like to see posted to help others.
@@ellensburgamplifier sorry to hear that Todd, do you have apprentices? To pass all this skill and knowledge to?
@@E-raticWarrior No apprentices at this time as there is a lack of knowledgeable people in basic electrical theory and troubleshooting for me to bring on.
I have the hfi2000 amplifier and have a chance to buy another. I'm running 2 12in evl 1250rms each subwoofers off it. I think I could use another one. Do you have any idea what the hfi series actually does for power compared to rated? Thanks!
Hello and thank you for the support. I do not know what the clipping output is as I don't dyno amplifiers. You would have to have one put on a dyno to know or you can base it somewhat off of the available rail voltage.
@@ellensburgamplifier Is it similar to using a DMM to set the amplifier gain but would have to use a process of elimination. Because a company can print on the amplifier that it's 1100 watts *cough boss audio* but it has a 25 amp fuse and when running a 50Hz sinewave through the max voltage at the output is 31 volts which would calculate to, with a 4 ohm load
@@E-raticWarrior I feel the end user should always know what the rail voltage is to properly set an amp up. There are so many variables when it comes to output wattage that it is hard to calculate what an amplifier will do. What I do is log the rail voltage at the rectifiers with an input voltage of 12,13,14, and 15 volts (sorry guys I do not support the use of 16 volts, especially with 1:11 transformers) and then figure roughly a 20% loss through the output stage to give a rough idea of the potential clipping voltage. A scope is always the best in my opinion as you can see the sign wave.
@@ellensburgamplifier I just recently found out about plus and minus voltage rails and the fact there's negative voltage, which blew my mind. To be honest the end user wouldn't know what to do with such information without having considerably knowledge about how an amplifier works and because of that they can't sell that end user an amplifier with 5000 Watts printed on it with a 10 or 20 amp because that end user would immediately know that's BS!
@@E-raticWarrior Indeed! I spend quite a bit of time on the phone helping people understand amplifiers.
I need to replace some IRF3205's but those are discontinued according to mouser. What are you using to replace these? Ebay and Amazon has them but I'm not taking a chance of them being fakes
You may have searched for the wrong part number. The 3205 is in stock through Mouser. www.mouser.com/c/?q=IRF3205PBF
Thank you for not purchasing components through "other" vendors as they will most likely be counterfeit. If you want to save money and do a lot of repairs LCSC has an excellent price point for the 3205s.
Where are you getting the driver cards from? I will rebuild the old one but just wondering where you are getting new driver boards.
@@garrettlassalle6544 I purchased a bunch of scrap boards that still had all of the cards from a local shop.
One other question for you. The C3228 and A1275 transistors on the power supply driver board. Mouser doesn't have them. Have you found these anywhere else or do you have an equivalent?
👍👍👍...
Thank you!
@E'burg Amplifier Repair your welcome sir...👍
I have ssl 1200.1 it's not turning on .....fault
A good rule of thumb is if the protection LED comes on then the power supply might be OK but if no LEDs come on at all then the power supply is down.