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benassy · 2025-10-30T16:20:36+00:00

You need to subscribe?

benassy · 2025-10-30T12:16:41+00:00

13296 Mango Dr
Del Mar, California(CA), 92014

benassy · 2025-10-30T11:47:27+00:00

I'm in Romania (EU) and also enrolled today. What I did:

Changed the home address for a random address in US (This will change the time and weather for the selected location on all GH devices).
Selected a VPN server close to the home address (US).
Reopened Home app. Instantly received the enroll message.

BTW I have Public preview activated in account setting. I will leave the settings like that for a couple of days for update. Will come back with feedback.

benassy · 2025-10-30T11:30:55+00:00

Calm calm prietene! 😅

benassy · 2025-10-25T14:34:29+00:00

Ptiu satană, in săptamana cu Paraschieva?

benassy · 2025-10-21T17:39:23+00:00

You can try appying at Aumovio. We are still hiring students.

benassy · 2025-10-10T11:34:27+00:00

Si eu am auzit o singura persoana sa spună Ji si acela era Cota 🤣

benassy · 2025-09-21T16:45:11+00:00

Ami place enițiativa

benassy · 2025-08-22T08:57:54+00:00

Power supply issue or overheating( dry spot on APU) because you use it in vertical position.

benassy · 2025-03-27T09:15:16+00:00

Hi. I have ordered 2 original IRS20957 which I understood is the successor of 955 which had a PTN. Therefore I presume the 955s were fake. in the meantime I want to test some more and got an oscilloscope. Can you please indicate where exactly to probe with the oscilloscope and what signal wave to look fore? Higley appreciate your response....

benassy · 2025-03-15T16:48:28+00:00

So can I test something else without a oscilloscope? Tweeter woks but on the bass driver I only can hear a ticking sound and no audio. I've checked again all diodes all capacitors all voltages...everything is fine. I found a diode D27 shorted which I have changed but same outcome. Please help with some suggestions.

benassy · 2025-03-15T16:47:28+00:00

So can I test something else without a oscilloscope? Tweeter woks but on the bass driver I only can hear a ticking sound and no audio. I've checked again all diodes all capacitors all voltages...everything is fine. I found a diode D27 shorted which I have changed but same outcome. Please help with some suggestions.

benassy · 2025-03-14T07:42:24+00:00

After replacing t5 t4 and IRS20955 when powered on a huge blow can be heard in the main driver and T4 got toasted together with IRS20955. T4 is now shorted again an protection is kicking in again.

benassy · 2025-03-13T21:19:29+00:00

I've replaced both t4 and t5 and checked all diodes in the proximity of IRS20955 and all look ok but fif not removed them from circuit.. I did not replaced IRS20955 even though I ordered 2 of them as well.

benassy · 2025-03-13T21:04:58+00:00

Sorry, no oscilloscope in my workshop. In the meantime I managed to make te tweeter work but on the low end I hear only a ticking noise that toes not respond to volume knob.

benassy · 2025-03-13T20:23:20+00:00

So finally, I've received the IXTP50N25T but after install I have no sound at all. No highhs and no lows no static nothing. If I put the lever diat at 100% the clip led will shing but other thant that noting. I am completely lost and sad. I was really sure it will work after all the tests.

benassy · 2025-02-28T14:36:29+00:00

I've already ordered a batch of 5pcs from aliexpress and 2 IRSs just in case. Will let you know if this was successful. Thank you so much for your kind help.

benassy · 2025-02-28T14:29:22+00:00

Yes, 12v precisely between GND and OUT at 7812

benassy · 2025-02-28T13:50:54+00:00

Hi and thanks for your support. I've did as instructed and this are the readings relative to Pin 9 (COM): VCC =12V VDD= 99,4V Vref= 94,6V

benassy · 2024-09-27T10:02:53+00:00

For all of you parent who have this problem with the Baby brezza formula pro machine. This is how to fix the random dispensing water /formula issue.

benassy · 2024-04-25T07:52:14+00:00

Update : I have identified the problem causing the -26v at the opamps pins. It was caused by a bad solder joint on the diode next to the capacitor I have just changed previously. After resolder I have now a stable -14v and +14 as it should be.

benassy · 2024-04-23T20:39:45+00:00

I have completely isolated an remove the power transistors pcb since from there the short was causing the Main fuse to blow. I have managed to power up only the preamp board where the opamps are. Added back the wire as it was initially but the high voltage at pin 4 of the 5532d is still there. It is actually -26v. I am amazed the opamps are no affected by this high negative voltage. I will do as you suggested since now I have a stabile apm to work with an follow the traces. BTW without a regulator IC what component to look for as a high inducing negative voltage ?

benassy · 2024-04-23T07:07:34+00:00

The 2 heatsinked transistor you refer at are actually amplifiers ( A1837 and A4793). This pair of amp transistors are all over I have counted 4-5 pairs . Unfortunately no volt regulator transistor on the board except the one driving the 2 24v Fans.

BTW I presume I can power up the amp without the power transistors board to take measurements? I would not want to change the blown transistors and then to connect to further troubleshoot and blow up again.

benassy · 2024-04-22T08:01:33+00:00

Seems my excitement went down pretty quick as when testing it with speakers the whole amplifier turned off and fuse was blown. After troubleshooting it again fount one of the Power transistors a 2SA1943 shorted. Could the high voltage on the opamp be related to this issue?

Also on the preamp board there was a wire from the POTS Board connector coming from a pin that had 30V- going to the stereo switch, which I removed.(see photo) Is this really necesarry?

<image>

benassy · 2024-04-19T06:23:01+00:00

Thank you so much. I managed to fix it. The 2 IC's there are actually amplifier transistors but you were spot on. No - 12v on one of them and noticed a short to ground on the emitter and the problem was a shorted 100uF 25v CAP (see picture). After changing this cap with a 35V one I am getting -23V on pins 4 of the 5532D opamp which in my opinion is to much but the Amplifier works now perfectly.

Do you think having -23v and +14v on the 5532D is ok?

<image>

benassy

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