T.amp TSA 4-1300 Power Amplifier Issue: Not Turning On, Red Diode Flashing, No Visible Damage

Another problem for me is the GBU2506SF bridge, has anyone seen similar Schottki bridges to buy?

we farnellu GBU2506F

There is a fundamental difference between the GBU2506 SF and

popej wrote:

in farnell GBU2506 F.

. I recommend that you read the manufacturer's application notes carefully.

GBU2506SF Reverse Recovery Time trr 40-50 ns (SF- for "Super Fast")

GBU2506F " Single phase, half wave, 60Hz , resistive or inductive load. trr ?1500ns "(F-insulated housing)
It is easy to distinguish products by price.

aaanteka wrote:

There is a fundamental difference between the GBU2506 SF and

popej wrote:

in farnell GBU2506 F.

. I recommend that you read the manufacturer's application notes carefully.

GBU2506SF Reverse Recovery Time trr 40-50 ns (SF- for "Super Fast")

GBU2506F " Single phase, half wave, 60Hz , resistive or inductive load. trr ?1500ns "(F-insulated housing)
It is easy to distinguish products by price.

If you have these notes, please share them, because they will be useful not only now, but also for the visitors

So GBU2506F is gone. I am still looking for a replacement today, however, it is hard to find with the same spacing of the feet and parameters in the addition of a quick bridge

There are originals.
There are even 10-25A quick bridges on Polish auction portals.

aaanteka wrote:

There are originals.
They even visit Polish auction sites.

Ladies, please send this note to GBU2506SF again or show me an archival link to some store where you saw it because on GBU2506SF everything works normally, but it is bombarded and warms up a bit but nothing else but I'm going to make a bridge anyway on the DSEP29-06A diodes and see if there will be any big difference, but somehow I do not think that there are trr

aaanteka wrote:

There are originals.
They even visit Polish auction sites.

I also can't find information about the SF version, I can't find documentation from him anywhere.

A little willingness and everything can be found.

popej wrote:

going to make a bridge on DSEP29-06A diodes

And where will you put it in this amplifier?

(?? ?? ?? ?? ?? ?? -'Ultra-fast rectifier bridge with energy recovery ' )

On the other hand, someone who has doubts about the parameters of this bridge, has a minimum qualification to repair such a device?

Link

note to finally found a quick bridge in google, I can also type You wrote that you saw it available somewhere, and you are not sending a link to google, but none of them meets the specifications

aaanteka wrote:

And where will you put it in this amplifier?

how, where? You mean there is little space ??

aaanteka wrote:

A little willingness and everything can be found.

popej wrote:

going to make a bridge on DSEP29-06A diodes

And where will you put it in this amplifier?

(?? ?? ?? ?? ?? ?? -'Ultra-fast rectifier bridge with energy recovery ' )

On the other hand, someone who has doubts about the parameters of this bridge, has a minimum qualification to repair such a device?

Link

Thanks for the documentation, although there is no such bridge anywhere to buy. I think you would have to write to the Chinese asking this company only to buy them ...

popej wrote:

note, I finally found a quick bridge in google, I can also enter it, you wrote that you saw it available somewhere, and not a link to google, you send so much that none of them meets the specifications

Everyone finds what they want. If you can focus your attention on the first 3 search results and one desired symbol, then you have this result. Hint: - enter the given password + the name of the auction portal and "eureka"!

Szymek11211 wrote:

Thanks for the documentation, although there is no such bridge anywhere to buy. I think you would have to write to the Chinese asking this company only to buy them ...

And you still mine. Maybe change the search engine, the search term, ask someone to search the given link.
The manufacturer only supplies the bridges in production quantities, but you can try.

Unless I have a more advanced search engine.

and so after reviewing about 1k applications from different directories, the only replacement that I found more closely resembled GBUE2560

popej wrote:

and so after reviewing about 1k applications from different directories, the only replacement that I found more closely resembled GBUE2560

Maybe we also have a different internet, because I have also looked for 200 datasheets from various, even strange Chinese sites, and from commercially available bridges suitable as a replacement is GBUE2560

popej wrote:

the only similar replacement I found is GBUE2560

Quite similar, it has worse parameters and it should be assumed that it will perform poorly in this application.

Szymek11211 wrote:

from various even and strange Chinese sides and from commercially available transmitting bridges

Why weird? The problem is that these types of elements are mostly available in production quantities to order. And this is one of the many reasons why an amateur repair of such an amplifier is practically impossible and certainly not profitable.

aaanteka wrote:

and certainly not profitable.

I do not know why you say so in the past, maybe it was now all this power supply without capacitors and you can put together for PLN 250 and the problem is only with the availability of this bridge, but doing it on the diodes is about PLN 50, so in total there will be 300, the question of how much damage is in the same in my amplifier I got a copy in which, apart from the power supply, I had only one transistor and one mosfet in the amplifier, so it was not logical to write down each piece at once for losses without any inspection
you are a terrible pessimist

popej wrote:

without capacitors and transformers can be folded for PLN 250 and the problem is only with the availability of this bridge, but doing it on the diodes is about PLN 50, so it will be 300 k together

It was already written on this topic some time ago:

aaanteka wrote:

The only thing is that those who can fix it right away have been on the market for years, and the product is already slightly old and has a shameful history among users. Hardly any serious acoustician, sound director or even a DJ decides to repair this amplifier, let's add a costly repair. If someone tries to repair this equipment based on commonly available components in the retail trade for a total amount of less than 1/2 of the market value of this amplifier, he is hoeed to the sun and is incorrect optimists. For this reason, we gave up in my company. But I don't want to confuse you, it's all ahead of you, colleagues.

You list the prices of components available in the retail market based on the cheapest untested components from Chinese suppliers. And these are just some replacements, because, as in the case of a bridge, for an amateur, the price is a barrier.
I see many tempted by the large earnings associated with the high failure rate of this model and the relatively low purchase price of a damaged amplifier ( it was also mentioned in this topic ). Nothing could be more wrong. Without investing sufficiently high resources and a lot of knowledge in the field of electronics, you can at most run the amplifier until the next failure fairly quickly.


Well, assuming even your PLN 250 we have:


-first launch ....................... PLN 250-PLN 500,
-second failure in the first year of operation .... PLN 250,
-third failure in the first year of operation..PLN 250,
- costs of replacing damaged elements
in let's assume 2 only channels, because they are always there
the direct cause of damage to the power supply..300 PLN
-------------------------------------------------- ---------------------------------
Annual cost of operation ....................... 1050-1300 PLN
-------------------------------------------------- ---------------------------------
Moreover, the necessary repair and commissioning time does not translate into any measurable profit ( for a specialist with appropriate equipment, it is a minimum of 100 man-hours due to this and not another design - I do not know what, in your opinion, is the minimum profitability rate adopted? ).


Therefore, I believe, and I base it on practice with this amplifier, but also on general professional experience, returning this amplifier to work in its original form is pointless. Why does someone need a 4-channel amplifier, which can be damaged at any time and must, if used, have a different amplifier that doubles it? Was the theoretical idea of the integrated 4-channel power supply not to limit unnecessary ballast? And in this case, always self-respectingthe sound engineer, sound engineer, acoustician must have an additional amplifier or even two amplifiers (additional ballast).

in this topic 1

in this topic 2

Added after 1 [minutes]:

popej wrote:

in my amplifier I got a copy in which, apart from the power supply, I had only one transistor and one mosfet in the amplifier

And a whole host of other elements were overloaded during the damage. Your approach is even a textbook example of how not to deal with damage to power devices.

One more question. Does this converter have voltage stabilization? If so, which element is responsible for the feedback from the secondary side?

It has already been written quite comprehensively on this topic. I recommend reading all posts.

Maybe such miracles were happening to someone at the SG3525 outputs? I put in new and SG and UC2525 and the effect is the same. When changing the state on the 1st output, it has a reflection on the other output.

Pany will give someone the exact voltage of this traf? 'Cause it's already boiled again I want to make a power supply in a separate block and when it was still working, I did not measure it

popej wrote:

Pany will anyone give the exact voltage of this traf?

Oh buddy, I see that I don't want to look at a few posts back. Oh well...
# 143

ziro_9 wrote:

The voltages on individual stages (measured at 230VAC ZAS) are:
P + - 30V
1H + - 62V
2H + - 125V
3H + - 188V

popej wrote:

'Cause it's already boiled again

Apparently there had to be a reason.

Hello, im new here
AT first, big thanks for posts about this amplifier, theres something from me, switching Frequency is 70kHz, dead time 800ns, theres a little ringing on the edges, it looks Like bad pcb design, after replacement igbt's looks better.


Dodano po 18 [minuty]:

My amplifier has broken igbt's,both IR2110 and all smd sand around, LM555, Lm339,
I recommend replace all, especially gate discharging diodes, bootstrap capacitors, when everyrhing looks ok, I solder igbt's and start test, but with small mod, I discontinued trace form igbt and primary coil of transformer, and put classic 100W lamp here, and controls voltages on the secondary side, when everyrhing looks good, we can put bulb out and start amp correctly, but dont forget all on the secondary side must be fine, for sure i desoldered jumpers on rails and put here some power resistors, now it looks Like amplifier working but theres problem with one chanel, dc offset is about 100mV, probably something with H-step, beacause i measure 90V (must be 60V)on output power transistors without input signal

Also can be helpfull, the amp is very similar to RAM audio S- series, service Manual You can find on elektrotanya.

I have one more question, what are the front mounting potentiometers on the PCB for?

Is it about those little trimmers? They are used to set the quiescent current of the tip, which at the same time translates into the appropriate operating point.

if it was an easy income do you think there would still be so much for sale?

Does anyone know where to look for reasons in the direct voltage at the output in the vicinity of 80-100mV? On working, unrepaired channels, I have around 40mv, including the same, although the amplifier supposedly works normally on 2 pairs of symmetrical voltages and most of the smd semiconductors have already been checked. Transistors paired in this channel, I even replaced them with sets with a heat sink from other channels, the voltages were the same

Szymek11211 wrote:

Does anyone know where to look for the reasons in the direct voltage at the output in the vicinity of 80-100mV? On working, unrepaired channels, I have around 40mv, including the same, although the amplifier supposedly works normally on 2 pairs of symmetrical voltages and most of the smd semiconductors have already been checked. Transistors paired in this channel, I even changed to sets with a heat sink from other channels, the voltages were the same

Is there no mass for them? clip is not lit?